BMW Coilovers for BMW E46 M3 S54 (1999-2005)

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Coilovers provide more adjustability than a strut and spring setup and can serve a variety of different needs - it's important to be sure of what your suspension goals are. We have broken down our coilover catalog into street and track categories, this is not to say you can't use one of our aEURoestreetaEUR coilovers on the track, or vice versa, but it is to give you a starting point. Are you someone who is interested in getting your BMW lower than factory height for the aesthetic value and handling benefits in a daily driver? Check out our street category. The majority of these are priced to avoid breaking the bank, but providing a good value in terms of features and benefits. On the other hand, if you are putting together your vehicle with the track as its main purpose, take a look at our track coilovers category. We have hand selected these coilover brands as being more expensive coilovers built to hold up to abuse.

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BC Racing BR Series Coilover Suspension Kit - BMW E46 M3
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BC Racing - Corporate Logo
T#:555853
Part#: I-14-BR
In Stock
$ 1,195.00 USD
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$ 1,195.00 USD
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Looking for coilovers that will provide reliability on street driven vehicles but are also capable of feeding your weekend track demon's desire for performance? BC Racing's BR Series coilover kit may be just the thing for you.

BR Series coilovers are the most popular and versatile option offered by BC racing, offering features such as 30-level dampening adjustment (simultaneous compression and rebound control), linear springs where possible, and a minimum of 2 inches ride height drop. To ensure performance, comfort, and quality, all BR Series kits are Dyno tested during the design stage to determine the best valving and spring rates, then installed and tested for a minimum of 6 months. This kit features mounts and brackets that are fully compatible with all stock mounting points and components.

The upper shock/strut mounts are all constructed of 6061-T6 Aluminum for strength and weight savings. BC Racing design 1 of 3 types of upper mounts for each vehicle: Caster/Camber Plates (+/- 3* camber), Camber Plates (+/- 3* camber), and Rubber Mount Plates (NVH reduction). The included mount option for this kit is shown in the kit specs and features below.

Lower shock mounts are powder coated for corrosion protection and constructed of either 6061-T6 aluminum that has been milled from a single piece (fork or bolt eye mount) or of STKM13C steel with all brackets welded robotically.

The included springs come in one of 3 styles: linear, S-barrel, and V-barrel. Linear springs are used in most applications unless limited by the OE design that does not allow the use of linear springs. All spring options are made from SAE9254 steel and have a zinc coating applied under the powder coating for increased spring corrosion protection and long term reliability.

All shock bodies used in the BR Series coilovers use a 53mm shock body (unless noted otherwise) for added strength, performance, and increased fluid capacity. All shocks are then powder coated black chrome for clean styling and corrosion protection.

Specs and Features:

  • 8k Front & 12k Rear Spring Rate
  • Linear front & S-Barrel rear springs
  • Valved specifically to spring style and rate
  • Camber Plate Front Mounts
  • Aluminum and Rubber Rear Mounts
  • Black Powder Coated Components
  • All OE style brackets and mounting for perfect fit
  • 30 Levels of Simultaneous Compression and Rebound Dampening
  • 2 inch minimum and 3+ Inches of total potential drop
  • Great for Track, Street, and any other conditions
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Bilstein B16 PSS10 Coil Over Suspension - E46 M3
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Bilstein - Corporate Logo
T#:1588
Part#: GM5-C668-H2
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$ 2,299.00 USD
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$ 2,299.00 USD
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The B16 PSS10 coilovers offer a stiffer spring rate than stock and a lower ride height for less bodyroll and better handling. These are among the easiest coil over kits on the market - no special mounts required (works with stock mounts and sway bar links), larger adjustment knob allows for easy shock damping changes, and coil over spanner wrenches included for easy height changes. Bilstein backs up their technology with a limited lifetime warranty. TUV approved for fitment, safety, and quality!

Bilstein's monotube shock dampers in the PSS10 offer 10 precise settings for compression and rebound. A new setting is just a click away, allowing you to set a ride and handling combination that works for your setting. Instead of offering too many shock settings that you're never going to use, Bilstein has chosen ten optimal damping curves from a smooth street setting (P10) to an ultra-stiff track-only setup (P1). Shock changes are made from an easy-to-use over-sized adjuster knob.

Ride height adjustments are done from perches that ride on each shock body, which are zinc coated for excellent wear and corrosion resistance. You can set the ride height between 0.5 to 1.3 inches lower than stock ride height. Springs are progressively rated so their initial compression rating is quite soft and then becomes stiffer as the spring compresses. These are stiffer than most coil over kit manufacturers and the results of Bilstein's extensive testing on the German Nurgburgring and Autobahn.

The fitment of these is just like a standard shock and spring package. The front struts and rear shocks are compatible with the stock strut and shock mounts. You can re-use your own or choose a mount with additional features. Because the Bilstein design keeps the sway bar tab in the original location, you can re-use the stock sway bar links. Using the stock mounts keeps the cost and complexity down and allows for TUV certification. You can also be assured of the stock mount's quiet and long-lasting performance. The assembly of the front strut is the same as a the factory strut. In the rear, ride height is made by an adjustable spring perch that sits under the rear spring. Install instructions and diagrams included.

If you're looking for a supremely capable and high quality suspension, then look no further than the Bilstein PSS10. It combines all of the best German engineering with real-world development, and a lifetime warranty.

Fitment note: this system works only on cars not equipped with the factory EDC electronically adjustable shocks.

Featuring:

  • Largest available piston diameter for greater sensitivity and precise control.
  • Patented digressive piston head design and deflective valving instantly reacts to changing road conditions.
  • 10-way adjustable dampening knobs that "click" from soft to hard with no tools or jacking required.
  • Monotube design dissipates heat more effectively than a twin tube shock for cooler, more efficient operation and longer life.
  • Weather resistant coating to resist oxidization, and ensure long life.
  • Lighter weight reduces wear and tear on suspension components.
  • Wrenches to adjust front and rear ride height included!

This item fits the following BMWs:
2001-2006 E46 BMW M3

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E46 M3 KW Coilover Kit - Variant 2 (V2)
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KW Suspension - Corporate Logo
T#:11596
Part#: 15220023
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$ 2,264.00 USD
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$ 2,264.00 USD
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Adjustable Rebound Damping

This system intended for the experienced E46 M3 driver who wants to determine the individual lowering of his vehicle, and also wants to make setup adjustments. The adjustable rebound damper allows adjusting the pitch and roll of the car and therefore the driving pleasure can be adapted to your requirements.
  • Individually adjustable rebound
  • Stainless steel technology "inox-line"
  • Individually height-adjustable - Front - 20-40mm, Rear - 20-40mm
  • TUV approved lowering range
  • High-quality component parts for long durability



    This item fits the following BMWs:
    2000-2006 E46 BMW M3 Coupe, M3 Convertible
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    BC Racing DS Series Coilover Suspension Kit - BMW E46 M3
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    BC Racing - Corporate Logo
    T#:598270
    Part#: I-14-DS
    In Stock
    $ 1,395.00 USD
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    The DS series from BC racing offers increased control and feedback for those looking to achieve the best driving experience possible. Digressive Valving means the shock is firmer at low speed, while transitioning to a softer and more linear feel as (shaft) speed increases. This leads to a much more planted and controlled feeling in the chassis, increased feedback through the wheel, and a slight drop in passenger comfort.
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    ST XTA Performance Coilover System - Adjustable Damping
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    Suspension Techniques - Corporate Logo
    T#:363022
    Part#: 18220823
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    $ 1,649.00 USD
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    For those who demand the absolute best performance comes the ST XTA coilover. The full driving behaviour of your car can be adjusted using KW dampeAr technology along with an adjustable aluminum uniball top mount for fine-tuning of the camber and caster! ST XTA coilovers feature KW damping technology which allows the suspension to be made either stiffer or softer depending on the driving conditions. This damping adjustment is made on the upper end of the chromed piston rod allowing the setup to be changed almost instantly. If the rebound force is increased, the car will drive with even more track stability and further reduced bodyroll. If the rebound force is decreased, the car will feel more comfortable when on the move. For increased performance, the ST XTA features an aluminium adjustable topmount allowing the camber and caster to be adjusted depending on your driving needs or vehicle setup. Latest damping technology for maximum longevity Reduced system friction for effective damping adjustment Lowering within TüV-tested adjustment range of 0.8-1.6"F, 0.8-1.6"R Front and rear axle with thread adjustment Galvanized coilover struts with additional coating for an optimized corrosion protection Complete solution with adjustable spring plate, race spring system and bumpers with dust protection Aluminum adjustable uniball top mounts Scaled camber adjustment Externally adjustable damping 5 year limited warranty
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    E46 M3 H&R Coilover Suspension
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    H&R - Corporate Logo
    T#:348221
    Part#: 50415
    Ships in 4 Business Days
    $ 1,599.99 USD
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    $ 1,599.99 USD
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    The H&R Coil Over kit takes the traditional shock/spring package one step further. H&R combines their progressive-rate springs with specially valved shocks and adds height adjusters that let you set the ride height to your own personal tastes. These coil overs are designed for street use with progressive rate springs that start out soft and stiffen as they are compressed. This helps to keep the ride compliant while still giving better handling and balance.

    H&R designs each suspension to work as a coil over. This means that the correct amount of travel has been built into each shock. And the shocks are valved specifically for the spring rates to give a tight and controlled ride without being harsh or ultra-stiff. Each H&R coil over is TUV tested and approved and meets ISO quality standards. These are used with the stock strut and shock mounts for a quick and easy install.

    Height adjustment range:
    F: -1.2-2.3"
    R: -.75-1.5"

    This coilover kit fits the following BMWs:
    2001-2006  E46 BMW  M3
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    E46 M3 KW Coilover Kit - Variant 3 (V3)
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    KW Suspension - Corporate Logo
    T#:361427
    Part#: 35220023
    In Stock
    $ 3,094.00 USD
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    $ 3,094.00 USD
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    As Used on Project E46 M3
    Adjustable Rebound & Compression Damping

    State-of-the-art technology from motor sports for more performance on the road for your E46 M3. The separate and independently adjustable rebound- and compression damping allows for an individual suspension setup for different uses and preferences. The unique patented system with its two-stage valves allows a rebound damping adjustment (comfort) and a compression adjustment (driving dynamics) in the low-speed range while the high-speed range which controls the driving safety, is fixed.

  • Individually adjustable rebound and compression
  • Infinitely variable rebound damping adjustment
  • 14-way adjustable compression damping
  • Unique, individually working damping force adjustment
  • Stainless steel technology "inox-line"
  • Individually height-adjustable - Front - 20-40mm, Rear - 20-40mm
  • TUV approved lowering range
  • High-quality component parts for long durability.





    This item fits the following BMWs:
    2000-2006 E46 BMW M3 Coupe, M3 Convertible
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    Ohlins Road And Track DFV Coilovers - E46 M3
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    Ohlins - Corporate Logo
    T#:404004
    Part#: BMSMI30
    In Stock
    $ 3,277.99

    This product was last offered at the strikethrough price on
    01-30-2026

    $ 3,000.00 USD
    $ 3,000.00 USD
    Ohlins Racing has a long history dating back to 1976 of providing premium motorcycle and automotive suspension systems to numerous racing teams, individual racers, and OE brands such as BMW Motorsport, Audi, Lamborghini. Pagani, Ducati and Kawasaki. Over time, thanks to extensive R&D, testing, and tuning, their products have evolved into some of the highest quality suspension systems in the world, providing years of flawless operation on both the street and the track. Ohlins' latest automotive suspension system, the DFV (Dual Flow Valve) Road and Track Coilover Kit, has bridged the gap between comfortable stock suspension and track focused coilover kits. These kits provide a ride that glides over typical bumps and dips in the road, all without the typical hard rattle and harsh feel of usual coilovers, and turn in tight and maintain tire grip and traction in corners significantly better than stock suspension ever could. This is all thanks to the spring rate chosen and Ohlins and their signature Dual Flow Valve. The DFV maintains comfort and agility by giving the same characteristics for both rebound and compression, allowing the wheel and tire to maintain constant contact with the road/track for maximum control. The Dual Flow Valve works by controlling shock fluid flow based on resistance and impact velocity. This is controlled in both compression and rebound, giving the quick shock operation that helps maintain traction. At low shaft travel speeds, oil flows mostly through the shaft jet bleed. At higher shaft speeds, oil flows mostly through the compression/rebound ports in the piston. At very high shaft speeds, or during sudden accelerations from potholes or large bumps in the road, oil can then escape through the ports in the DFV, absorbing a large amount of energy that would otherwise throw off the balance and control of the vehicle and keeping the tire planted firmly on the ground. With all three compression and rebound ports working together according to pressure and shaft speed, the result is the notorious premium suspension feel that only Ohlins can offer. In addition to managing the rebound and compression control, coilovers must also properly address heat changes in the shock oil. As the shock is pushed harder and longer, the oil quickly heats up due to friction and compression, and the oils flow characteristics change. The hotter the oil is, the easier it is for it to travel through ports and valves. To prevent this typical fade in control, Ohlins has implemented a temperature controlled needle bleed valve system that will expand as temperatures rise, slowly increasing restriction in the fluids flow through the valve gap. This produces a consistent dampening rate that maintains the vehicle's suspension characteristics lap after lap, turn after turn, no matter how hard you push your suspension's capabilities. Features: DFV (Dual Flow Valve) Adjustable ride-height Fully rebuildable Corrosion salt spray tested (ISO 9227) Includes hardware and installation instructions 2 year Limited Warranty Specs: Front Spring Rating: 400 lbs/in ( 7 kg/mm) Rear Spring Rating: 630 lbs/in ( 11 kg/mm)
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    E46 M3 KW Coilover Kit - Variant 1 (V1)
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    KW Suspension - Corporate Logo
    T#:11561
    Part#: 10220023
    In Stock at Vendor
    $ 1,924.00 USD
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    $ 1,924.00 USD
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    Factory Pre-set Damping

    The Variant 1 is KW's basic simple and effective coil over kit that is still packed with lots of features -
  • Pre-set damping optimized for a blend of ride comfort and handling with less bodyroll than the standard suspension,
  • Stainless steel strut/shock bodies and composite spring perches for superior corrossion resistance,
  • Individually height-adjustable - Front = 20-40mm lowering; Rear = 20-40mm lowering,
  • TUV approved lowering range and operation,
  • Expert engineering and design for ease-of-use and long durability,
    This is the ideal coil over kit for an E46 M3 owner who does not plan on tracking or autocrossing the car and just wants a lower, more aggressive stance and better handling. KW has set the shock damping rates to be an excellent balance for a smooth yet taut ride, and to resist bodyroll motions for better handling. The Variant 1 differs from the Street Comfort set in that it has stiffer springs and revised shock settings. If you want a sportier ride and better handling than stock the Variant 1 is an excellent choice.

    Fitment Note: Wheel spacers may be required depending on wheel/tire sizing and ride height setting.




    This item fits the following BMWs:
    2000-2006 E46 BMW M3 Coupe, M3 Convertible
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    E46 M3 - RSS Club Sport Coilover Kit
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    H&R - Corporate Logo
    T#:367429
    Part#: RSS1415-1
    Ships in 4 Business Days
    $ 1,432.99 USD
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    Elevate your vehicle's performance with the renowned H&R RSS Club Sport Coilovers, crafted with precision engineering and German expertise. Since the late 1970s, H&R has set the standard for high-quality suspension components in the automotive industry. They pioneered modern coilovers, focusing not only on "stance" but also on superior materials and ride comfort.

    The H&R RSS Club Sport Coilovers are track-tested at the Nürburgring, ensuring optimal performance for both street and track enthusiasts. Lowering the center of gravity allows for aggressive cornering with minimal body roll. These coilovers feature exclusive dynamic damper technology that adapts to various road surfaces and driving conditions, delivering an exceptional ride quality.

    Backed by nearly four decades of dedication to suspension innovation, H&R's commitment to excellence is evident in their products. Their team of engineers consistently delivers TUV & ISO-certified suspension components, emphasizing safety and top-notch quality.

    Experience the pinnacle of aftermarket suspension with H&R, where the 100% German-made coilovers remain original yet continue to be among the best in the industry.

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    BC Racing BR Series Extreme Low Coilovers - BMW E46 M3
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    BC Racing - Corporate Logo
    T#:568104
    Part#: I-14E-BR
    Ships on Jul 28, 2026
    $ 1,345.00 USD
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    $ 1,345.00 USD
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    Looking for coilovers that will provide reliability on street driven vehicles but are also capable of feeding your weekend track demon's desire for performance? BC Racing's BR Series coilover kit may be just the thing for you. BR Series coilovers are the most popular and versatile option offered by BC racing, offering features such as 30-level dampening adjustment (simultaneous compression and rebound control), linear springs where possible, and a minimum of 2 inches ride height drop, up to 5". To ensure performance, comfort, and quality, all BR Series kits are Dyno tested during the design stage to determine the best valving and spring rates, then installed and tested for a minimum of 6 months. This kit features mounts and brackets that are fully compatible with all stock mounting points and components. The upper shock/strut mounts are all constructed of 6061-T6 Aluminum for strength and weight savings. BC Racing design 1 of 3 types of upper mounts for each vehicle: Caster/Camber Plates (+/- 3* camber), Camber Plates (+/- 3* camber), and Rubber Mount Plates (NVH reduction). The included mount option for this kit is shown in the kit specs and features below. Lower shock mounts are powder coated for corrosion protection and constructed of either 6061-T6 aluminum that has been milled from a single piece (fork or bolt eye mount) or of STKM13C steel with all brackets welded robotically. The included springs come in one of 3 styles: linear, S-barrel, and V-barrel. Linear springs are used in most applications unless limited by the OE design that does not allow the use of linear springs. All spring options are made from SAE9254 steel and have a zinc coating applied under the powder coating for increased spring corrosion protection and long term reliability. All shock bodies used in the BR Series coilovers use a 53mm shock body (unless noted otherwise) for added strength, performance, and increased fluid capacity. All shocks are then powder coated black chrome for clean styling and corrosion protection. Specs and Features: 6k Front & 12k Rear Spring Rate V-Barrel front & Linear rear springs Valved specifically to spring style and rate Camber Plate Front Mounts Aluminum and Rubber Front Mounts Black Powder Coated Components All OE style brackets and mounting for perfect fit 30 Levels of Simultaneous Compression and Rebound Dampening Extreme Drop version allows additional 1-1.5" lowering over the standard 2-4" lowering from traditional BR suspension kits Shocks are 1" shorter in length and springs are specifically selected for greater lowering capabilities Great for Track, Street, and any other conditions
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    Ohlins Dedicated Track Coilovers - E46
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    Ohlins - Corporate Logo
    T#:593673
    Part#: BMU MU30
    Ships on Jun 23, 2026
    $ 4,358.99 USD
    $ 4,358.99 USD
    öhlins DEDICATED suspension systems offer race-level performance in a complete, ready-to-install package. Applications are shake-rig developed and track validated with specific spring rates (manufactured by Swift to öhlins specs), clicker settings, and ride height specifications. öhlins looks at the entire performance picture when developing DEDICATED systems, as each is engineered to perform with proven track setups for each specific chassis. Systems utilize Dual Flow Valve technology allowing engineers to tune force curves ideally balanced for chassis support and maintaining traction over pavement irregularities and on-track curb strikes. Spherical upper mounts included. HIGHLIGHTED FEATURES Dual Flow Valve Technology Developed for Track Cars Adjustable Damping and Ride Height Spherical Upper Mounts Swift springs to öhlins specs Shake Rig and Track Validated Popular Trackcar Applications Rebuildable
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    TC Kline Single Adjustable Street/Track Coilover Kit - E46 non-Xi ...
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    TC Kline Racing - Corporate Logo
    T#:594671
    Part#: TCKE46SINGLEKIT
    Ships in 2 Business Days
    $ 2,554.99 USD
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    Lifetime warranty on street driven cars! TC Kline's coilover kits feature proprietary TC Kline Racing Koni dampers, camber plates, and recommended, track proven spring rates. This kit includes 400#F/500#R springs .
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    E46 TCKR Single Adjustable Coilover Kit - FS 550# - RS 600# - Monobal...
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    TC Kline Racing - Corporate Logo
    T#:16175672
    Part#: TCKE46SINGLE5506
    Ships in 3 Business Days
    $ 2,554.99 USD
    $ 2,554.99 USD
    Proven on the street and track, TC Kline's system is unmatched by any other system on the market. Their unique Smart Shock technology mated with our VVS alloy springs makes this ride height-adjustable kit the most versatile available. Incorporating separate external compression and rebound adjusters, the shocks can be dialed from street comfort to a full race setup in minutes.
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    TC Kline Double Adjustable Street/Track Coilover Kit - E46 RWD ...
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    TC Kline Racing - Corporate Logo
    T#:594687
    Part#: TCKE46DBLKIT
    Ships in 7 Business Days
    $ 3,514.99 USD
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    Lifetime warranty on street driven cars! TC Kline's coilover kits feature proprietary TC Kline Racing Koni dampers, camber plates, and recommended, track proven spring rates. This kit includes 400#F/500#R springs .
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    H&R Rear Ride Height Adjuster/Spring Perch (for 60mm I.D. springs...
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    H&R - Corporate Logo
    T#:11726
    Part#: HR92-K-X-011A01
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    $ 92.99 USD
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    H&R makes it easy to adjust the rear ride height on cars with 60mm ID springs (road racing springs, H&R coil over springs -- not stock springs or any sport spring). These lower spring perches fit below the spring on the rear control arm. Adjustment is made by unbolting the shock to all the spring to move freely, then turning the spring perch to raise or lower the ride height.

    Sold Individually.

    For more information on H&R height adjusters and coil overs, click here .

    This item fits the following BMWs:
    1999-2005 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi M3
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    ST X Performance Coilover System - Fixed Damping - E46 M3
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    Suspension Techniques - Corporate Logo
    T#:379449
    Part#: 90223
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    $ 1,089.00 USD
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    ST Suspensions - German-Engineered Coil Overs at an Affordable Price.
    ST Suspensions has partnered with KW Suspensions in Germany to offer an affordable German-engineered coilover kit. The ST coil overs are based on the entry-level KW Variant 1 but with zinc-plated shock bodies in place of the more expensive stainless steel. Each ST coilover has dampers perfectly tuned for the springs included with the kit. It's a matched shock and spring package with the added feature of adjustable ride height. This delivers a comfortable but sporty and controlled ride without being jarring or uncomfortable. The engineering and performance is unbeatable at this price! The ST coilover kit is packed with features found on more expensive fully-adjustable coil overs -

  • Pre-set fixed damping optimized for a blend of ride comfort and handling with less bodyroll
  • Zinc-plated steel strut/shock bodies
  • Composite-coated spring perches reduce noise and vibration
  • Individually height-adjustable
  • TUV approved lowering range and operation
  • Expert engineering and design for ease-of-use and long durability
    This is the ideal coil over kit for an enthusiast owner who does not plan on tracking or autocrossing the car and just wants a lower, more aggressive stance and better handling. ST has set the shock damping rates to be an excellent balance for a smooth yet taut ride, and to resist bodyroll motions for better handling. If you want a sportier ride and better handling than stock ST Coil Overs are an excellent choice.

    Lowering
    Front:0.8" to 1.6"
    Rear:0.8" to 1.6"

    This item fits the following BMWs:
    2001-2006 E46 BMW M3
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    BC Racing RM Series Coilover Suspension Kit - On-Center Front Mounts ...
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    BC Racing - Corporate Logo
    T#:4319909
    Part#: I-14-RM
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    $ 1,495.00 USD
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    BC Racing has made a name for themselves in the automotive enthusiast communities by developing adjustable, street-and-track capable coilover kits for over a decade that are not only extremely effective, but also don't brake the bank! The BC Racing RM Series Coilover System uses a mono-tube inverted damper in the front and rear of vehicles that use McPherson style OEM strut suspension. On vehicles that use front struts only, BC Racing provides an inverted front strut and then provides an upright BR Series damper for the rear. Inverted dampers are useful in decreasing unsprung weight by moving the greatest mass of the strut to the top where it connects to the sprung weight of the chassis, where weight can be more easily shaved. The RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages. The large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistent steering geometry resulting in more predictable and responsive handling. Know your protected from the elements! The damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminum components (top mounts, locking collars etc.) are anodized and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc.) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard. Features: Highly Customizable Inverted Mono-Tube Damper Linear Piston And Damping Curve Height Adjustment Independent Of Spring Compression 30-Clicks Of Simultaneous Compression/Rebound Adjustment Front Camber Plates Standard On Applicable Kits Rear Camber Plates Available For Applicable Kits Custom Spring Rates And Swift Spring Compatible Custom Valving Or Valving Paired For Custom Spring Rates 1-Year Warranty Against Manufacturers Defect Fully Rebuildable NOTE: LEAD TIMES WILL BE 4-8 WEEKS.
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    E46 M3 KW Coilover Kit - Clubsport
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    KW Suspension - Corporate Logo
    T#:338394
    Part#: 35220825X
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    Starting at $ 4,744.00 USD
    Starting at $ 4,744.00 USD
    Adjustable Rebound & Compression Damping, Front Camber Plates & Stiffer Springs - 2 Way Adjustable

    KW Clubsport coilovers was developed for E46 M3 owners who demand a better handling car when participating in track day events, but also require a setup that could be used every day. The Clubsport was specifically designed for the Nordschleife using track day tires. By using the adjustable camber mounts, the suspension geometry can be adjusted to the requirements of tires and the intended use. The mentioned adjustment options combined with the independently adjustable rebound and compression damping technology allow a suspension setup according to the vehicle load, tire characteristics and different track conditions. KW Clubsport meets every demand regarding a coilover for the usage on the road and the race track. Choose Part number 35220825 or 39720225.

    KW Clubsport suspension kits are independently adjustable in compression and rebound and include high performance racing springs. Racing front camber plates are included for further performance. KW Clubsport guarantees excellent handling, best performance, highest agility and fantastic lap times.
  • Height adjustable coilovers - Front - 20-40mm, Rear - 20-40mm
  • Performance setup for the racetrack
  • Dampers in compression & rebound forces independently adjustable
  • Use of high performance linear race springs: Front 400 lbs/inch, Rear Progressive.
  • Stainless steel technology "inox-line"
    Fitment note: wheel spacers may be required depending on wheel sizing and offset.

    KW Clubsport Development and Testing




    This item fits the following BMWs:
    2000-2006 E46 BMW M3 Coupe, M3 Convertible
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    ECS E46 M3 Monoball FCAB's & Performance Coilovers
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    Enthusiast Bundles - Corporate Logo
    T#:25042497
    Part#: 029308ECS01EBKT
    In Stock
    Sale - Save 32% $ 1,624.99

    This product was last offered at the strikethrough price on
    05-05-2026

    $ 1,099.00 USD
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    $ 1,624.99

    This product was last offered at the strikethrough price on
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    $ 1,099.00 USD

    Elevate your E46 M3 driving experience with the ECS Tuning Performance Coilover System. Crafted with daily drivers in mind, these coilovers seamlessly blend enhanced performance, aggressive aesthetics, and comfort, offering a smooth ride comparable to stock setups. Unleash the full potential of your BMW's suspension with top-tier coilovers at a fraction of the cost.

    Key Features:

    • Performance Coilover System:
      • Sport-tuned, height, damping, and body adjustable suspension
      • High-quality materials and coatings for optimal performance
      • Perfect ride height for a dynamic appearance
      • Spring Rates: Front 12kg/mm, Rear 10kg/mm

    Performance Features:

    • 32 levels of rebound damping adjustment
    • Monotube shocks/struts with progressive rate coil springs for road-sticking grip
    • Lowered ride height improves handling with a lower center of gravity
    • Adjustable front bodies maintain ride height and correct spring pre-load
    • Adjustable front and rear bodies ensure the shock operates in the correct valving range, regardless of ride height

    Product Design:

    • Durable gloss black powder-coated strut and shock bodies
    • Clear zinc-coated threaded portions for optimum corrosion protection
    • Reflex Silver Metallic powder-coated coil springs for durability
    • Red anodized, billet aluminum lower spring seats with locking collars for on-the-car adjustability
    • Integrated bump stops for added protection

    Upgrade further with the Turner Motorsport Control Arm Monoball Upgrade with housings (FCAB) for unparalleled handling and braking performance.

    Key Features:

    • Bearing:
      • Extremely robust, greaseable, double lip sealed spherical bearing (Rated for 20,000lbf Dynamic, 90,000lbf Static)
    • Housing:
      • 6061-T6, anodized housing with needle grease zerk for easy maintenance
      • In-house designed knurled OD for a perfect fit across housing diameters
    • Bearing Insert Arm Adapter:
      • Precision CNC machined Delrin, ensuring a tight fit between the bearing and the control arm
    • Performance:
      • Instant, crisp steering and braking response
      • Easy maintenance with long-lasting performance
      • Improved road feel without undesirable NVH
      • Grease before installation and with each oil service using high-quality Moly grease for maximum service life. Grease fitting tool - ES#3410138 or complete kit - ES#3411244.

    Transform your E46 M3 into a track-ready machine while maintaining street-ability for the spirited enthusiast.

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    Turner E46 M3 TrackSport PLUS Suspension Kit (Bonus Bundle!) ...
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    Turner Motorsport - Corporate Logo
    T#:339013
    Part#: TMS3850
    Ships in 9 Business Days
    Sale - Save 3% $ 3,324.99

    This product was last offered at the strikethrough price on
    05-03-2026

    Starting at $ 3,225.24 USD
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    This product was last offered at the strikethrough price on
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    Starting at $ 3,225.24 USD
    Special bundle offer! This kit adds Turner swaybars, Turner front adjustable sway bar / swaybar links, adjustable rear swaybar links, and JTD aluminum rear shock mounts to our TrackSport Coil-over suspension kit, for just $500 more. That's an additional $248.41 off the bundled items, combined for a $348.41 in savings (WOW!!). Kit fits all 2001-2006 E46 M3.

    Our own custom Coil-Over suspension kit for the E46 M3 has been designed specifically for the committed motorsport enthusiast who is willing to relinquish ride comfort on the street in return for razor-sharp handling performance. This is our firmest streetable coil-over kit, making it the choice for weekend track and club sport events. Designed and engineered by Turner Motorsport and H&R, these kits are Nurburgring tested and Autobahn / TUV approved. Such a combination of handling performance and quality simply cannot be matched at this special low introductory price.

    This kit consists of the following
    � Turner TrackSport Coil-over suspension - (front and rear H&R/Bilstein fixed-valving dampeners matched to Turner customized H&R coil springs, and feature fully-threaded front shock bodies (not an imitation sleeve-over) and adjustable rear spring perches that allow you to precisely dial in front and rear ride height. (kit tends to lower the car 1-2" front and .75-1.6" rear). Each shock is engineered to work in harmony with its matched progressive-rate spring (about 400 lbs front and 650 lbs rear), together creating a finely tuned suspension system.
    � Turner E46 M3 sway bar / swaybar Set - 30mm 3-way adjustable front bar and 25mm 2-way adjustable rear bar, including sway bar bushings.
    � Turner Adjustable Front Swaybar Links (pair) - Quiet operation and long life as the stock links, plus the strength and adjustability of rod-end style links. These allow you to neutralize preload on swaybars to balance the car.
    � TMS Adjustable Rear Swaybar Links (pair)
    � JTD Aluminum Rear Shock Tower Mounts (pair)

    Kit fits all E46 M3, as produced in 2001, 2002, 2003, 2004, 2005 & 2006. Pictured with our (optional) Turner Camber plates, these are not included in the basic coil-over kit, but can be added to dial front camber/caster settings, available in street or race versions.
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    BC Racing DS Series Coilover Suspension Kit - Off Center Top Plates -...
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    T#:49892348
    Part#: I-14-DS-OFFC
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    BC Racing's new proprietary digressive piston design offers increased damping force at low piston velocities while maintaining a linear damper feel at higher piston velocities. One of the greatest advantages of increased low-speed damping force relates to what the driver feels, e.g., roll, pitch, dive, and quick weight transitions on technical road courses. For The Ultimate In Driver Feel - Choose BC Racing DS Series Coilovers.
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    BC Racing BR Series Coilover Suspension Kit - E46 M3 Convertible ...
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    BC Racing - Corporate Logo
    T#:36777918
    Part#: I-121-BR
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    4% off MSRP $ 1,245.00

    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 1,195.00 USD
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    MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

    $ 1,195.00 USD
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    The BC Racing BR Series offers the most affordable entry into coilover suspension without sacrificing performance, comfort, build quality, vehicle height, or handling. This is done by extensively testing each vehicle then refining the coilover characteristics as many times as needed to ensure the most well-balanced and affordable aftermarket suspension conceivable. BC Racing takes great pride in choosing spring rates for our off-the-shelf kits that strike the perfect balance between comfort and performance so you're never stuck with an oversprung suspension like many other brands sell. BC Racing offers one of the widest ranges of damping adjustment with 30-clicks of compression/rebound adjusted simultaneously on the BR Series. With meticulously chosen spring rates, damper valving, and one of the widest adjustment ranges in the industry, you can't go wrong with the BC Racing BR Series Coilover System.
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    BC Racing BR Series Coilover Suspension Kit - W/ Swift Springs - E46 ...
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    T#:53361585
    Part#: I-121-BR-SW
    Ships on Jul 28, 2026
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    $ 1,765.00 USD
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    The BC Racing BR Series offers the most affordable entry into coilover suspension without sacrificing performance, comfort, build quality, vehicle height, or handling. This is done by extensively testing each vehicle then refining the coilover characteristics as many times as needed to ensure the most well-balanced and affordable aftermarket suspension conceivable. BC Racing takes great pride in choosing spring rates for our off-the-shelf kits that strike the perfect balance between comfort and performance so you're never stuck with an oversprung suspension like many other brands sell. BC Racing offers one of the widest ranges of damping adjustment with 30-clicks of compression/rebound adjusted simultaneously on the BR Series. With meticulously chosen spring rates, damper valving, and one of the widest adjustment ranges in the industry, you can't go wrong with the BC Racing BR Series Coilover System.
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    BC Racing ER Series Coilover Suspension Kit - Off-Center Front Mounts...
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    T#:4333551
    Part#: I-14-ER-O
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    The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates. By separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tires to maximize grip for the braking effort and also to allow you to trail brake into the corner without the car understeering. Ride height adjustment: Ride height is determined by the position of the coil over bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment. Because ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run. Know your protected from the elements! The damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard. Features: Highly Customizable Mono-Tube Damper Linear Twin-Piston Design Height Adjustment Independent Of Spring Compression 30-Clicks Of Compression Adjustment Via The External Reservoirs 30-Clicks Of Rebound Adjustment From The Top Of The Damper Front And Rear Camber Plates Standard On All Applicable Kits Front And Rear Pillowball Mounts Standard When Camber Plates Do Not Apply Custom Spring Rates And Swift Spring Compatible Custom Valved To Match The Drivers Requested Spring Rates Swift Spring Upgrade Available On Most Applications 1-Year Warranty Against Manufacturers Defect Fully Rebuildable NOTE: LEAD TIMES ON ALL NEW ORDERS 4-8 WEEKS
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    BC Racing RM Series Coilover Suspension Kit - Off-Center Front Mounts...
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    T#:4333503
    Part#: I-14-RM-O
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    BC Racing has made a name for themselves in the automotive enthusiast communities by developing adjustable, street-and-track capable coilover kits for over a decade that are not only extremely effective, but also don't brake the bank! The BC Racing RM Series Coilover System uses a mono-tube inverted damper in the front and rear of vehicles that use McPherson style OEM strut suspension. On vehicles that use front struts only, BC Racing provides an inverted front strut and then provides an upright BR Series damper for the rear. Inverted dampers are useful in decreasing unsprung weight by moving the greatest mass of the strut to the top where it connects to the sprung weight of the chassis, where weight can be more easily shaved. The RM series feature high quality damping adjustable monotube inverted dampers at the front or front and rear, depending on vehicle. The RM coilovers offer the majority of the features of the BR series but with the additional benefit of the inverted damper unit. Inverting the damper unit brings with it a number of advantages. The large 42mm damper rod and inverted design gives the inverted damper units much greater strength and resistance to side loadings. By reducing flex the RM inverted units lead to more consistent steering geometry resulting in more predictable and responsive handling. Know your protected from the elements! The damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminum components (top mounts, locking collars etc.) are anodized and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc.) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard. Features: Highly Customizable Inverted Mono-Tube Damper Linear Piston And Damping Curve Height Adjustment Independent Of Spring Compression 30-Clicks Of Simultaneous Compression/Rebound Adjustment Front Camber Plates Standard On Applicable Kits Rear Camber Plates Available For Applicable Kits Custom Spring Rates And Swift Spring Compatible Custom Valving Or Valving Paired For Custom Spring Rates 1-Year Warranty Against Manufacturers Defect Fully Rebuildable NOTE: LEAD TIMES WILL BE 4-8 WEEKS.
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    BC Racing ER Series Coilover Suspension Kit - On-Center Front Mounts ...
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    T#:4333550
    Part#: I-14-ER-C
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    The ER Series coilovers bring with them the high quality and unique features seen on the BR and RM type but have the additional benefit of external reservoirs and the ability to allow the end user to individually adjust and set compression and rebound damping rates. By separating the adjustment for damping compression and rebound the ER Series allows you to dial the vehicle in to your exact needs. When braking hard whilst approaching a corner you want the car to transfer weight to the front tires to maximize grip for the braking effort and also to allow you to trail brake into the corner without the car understeering. Ride height adjustment: Ride height is determined by the position of the coil over bottom mount. The mount can be wound up and down the damper body to give a full range of adjustment. Because ride height is determined by an adjustable bottom mount rather than spring platform you retain full damper travel regardless of the ride height run. Know your protected from the elements! The damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminium components (top mounts, locking collars etc) are anodised and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard. Features: Highly Customizable Mono-Tube Damper Linear Twin-Piston Design Height Adjustment Independent Of Spring Compression 30-Clicks Of Compression Adjustment Via The External Reservoirs 30-Clicks Of Rebound Adjustment From The Top Of The Damper Front And Rear Camber Plates Standard On All Applicable Kits Front And Rear Pillowball Mounts Standard When Camber Plates Do Not Apply Custom Spring Rates And Swift Spring Compatible Custom Valved To Match The Drivers Requested Spring Rates Swift Spring Upgrade Available On Most Applications 1-Year Warranty Against Manufacturers Defect Fully Rebuildable NOTE: LEAD TIMES ON ALL NEW ORDERS 4-8 WEEKS
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    ST XA Performance Coilover System - Height And Rebound Adjustable - E...
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    Suspension Techniques - Corporate Logo
    T#:599124
    Part#: 18220023
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    Designed in conjunction with KW Germany, ST XA coilovers deliver a sporty handling by reducing the car’s bodyroll during compression as well as improving agility when driving fast. The high-quality production of each ST XA coilover includes a low-friction and pressure resistant housing alongside a chrome-plated piston rod for maximum longevity. A mono block guide and ST seal package ensures the twin-tube dampers remain free of dirt particles in all weather conditions.
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    BC Racing ZR Series Coilover Suspension Kit - Off-Center Front Mounts...
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    T#:4333520
    Part#: I-14-ZR-O
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    BC Racing's new ZR Series Coilovers bring a 3-way adjustable track ready coilover system to racers from novice to pro for a price not seen before in the performance suspension market. Each ZR Series Coilover system offers independent low speed and high speed compression adjustment and separate rebound adjustment. They also offer full height adjustability independent of piston travel and spring preload. On cars with McPherson struts the ZR Series comes standard with an inverted monotube damper with the steel braided Teflon coated line exiting the top of the damper to the external reservoirs that can be remotely mounted in the engine bay or boot. The ZR Series kits offer 30 clicks of rebound adjustment, 15 clicks of low speed compression adjustment, and 12 clicks of high speed compression. Know your protected from the elements! The damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminum components (top mounts, locking collars etc.) are anodized and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc.) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard. Features: * 3-way adjustable damping controls * External reservoir * Engineered for 100% track use * Inverted damper design. (depending on models) * Dual Piston design. (1 in res., 1 in shock) * Teflon coated steel braided lines for external reservoir on inverted dampers and solid stem for double A-arm cars * Custom spring rates available * Completely rebuildable * Monotube damper design * Patented concave lower locking collar * 1 year manufacturer warranty
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    BC Racing ZR Series Coilover Suspension Kit - On-Center Front Mounts ...
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    T#:4333519
    Part#: I-14-ZR-C
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    BC Racing's new ZR Series Coilovers bring a 3-way adjustable track ready coilover system to racers from novice to pro for a price not seen before in the performance suspension market. Each ZR Series Coilover system offers independent low speed and high speed compression adjustment and separate rebound adjustment. They also offer full height adjustability independent of piston travel and spring preload. On cars with McPherson struts the ZR Series comes standard with an inverted monotube damper with the steel braided Teflon coated line exiting the top of the damper to the external reservoirs that can be remotely mounted in the engine bay or boot. The ZR Series kits offer 30 clicks of rebound adjustment, 15 clicks of low speed compression adjustment, and 12 clicks of high speed compression. Know your protected from the elements! The damper units are black chromed steel to give superb durability even through the darkest of European winters. The aluminum components (top mounts, locking collars etc.) are anodized and the steel lower mounts go through an electrophoretic disposition process followed by powder coating. A random selection of steel components (brackets, dampers, screws etc.) are put through a salt spray test once a month to check the quality of the protective processes and that anti corrosive properties are kept at the highest possible standard. Features: * 3-way adjustable damping controls * External reservoir * Engineered for 100% track use * Inverted damper design. (depending on models) * Dual Piston design. (1 in res., 1 in shock) * Teflon coated steel braided lines for external reservoir on inverted dampers and solid stem for double A-arm cars * Custom spring rates available * Completely rebuildable * Monotube damper design * Patented concave lower locking collar * 1 year manufacturer warranty
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    KW Clubsport Coilover Kit - 2-Way Adjustable - E46 M3
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    KW Suspension - Corporate Logo
    T#:348849
    Part#: 35220825
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    Tailored for track performance, the KW Clubsport Coilover Kit offers exceptional adjustability, catering to enthusiasts who desire precise ride quality adjustments according to varying loads, tire setups, and other driving factors.

    Product Benefits:

    • Ideal for track performance
    • Abundant adjustability options
    • Precision in ride quality adjustments
    • Customizable settings for load, tires, and driving conditions
    • Enhanced handling and responsiveness
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    BC Racing RM Series Coilover Suspension Kit - E46 M3 Convertible ...
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    T#:51355989
    Part#: I-121-RM
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    For the E46 M3 Convertible owner who demands uncompromised feedback during spirited driving or track sessions, the BC Racing RM Series offers a professional-grade motorsport approach. By moving the fluid reservoir away from the wheel hub and brake components, the RM Series manages heat more effectively, preventing damper fade during prolonged high-speed sessions. The inclusion of front pillowball camber plates replaces compliant factory rubber bushings, providing direct and unmediated steering feel. Because convertibles often require higher roll stiffness to compensate for chassis flex, the RM Series' default 12kg rear spring rate provides the stability needed to keep the E46 M3 planted and responsive through tight technical sections. Key Features: Reduced Damper Fade: Inverted layout keeps oil temperature more stable by increasing distance from hot brake components. Camber Adjustable Top Mounts: Precision-engineered aluminum plates allow for aggressive alignment specs to maximize front-end grip. Patented Concave Locking Ring: Unique design ensures that once ride height is set, the lower mounts remain locked securely against vibration. Linear Piston Architecture: Provides a predictable and consistent damping feel for better driver confidence at the limit. Fully Rebuildable: Every component is individual and replaceable, ensuring the long-term serviceability of the system. Specifications: Vehicle Fitment: 2000–2006 BMW M3 (E46) Convertible / Coupe. Spring Rates (Default): Front: 8 kg/mm | Rear: 12 kg/mm. Optional Upgrades: Compatible with custom spring rates and Swift Springs (+2kg/-2kg range on standard valving). Finish: Black chrome-plated steel bodies for maximum corrosion resistance. Warranty: 2-Year limited warranty against manufacturer's defects.
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    BC Racing ER Series Coilover Suspension Kit - E46 M3 Convertible ...
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    T#:51355992
    Part#: I-121-ER
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    For the E46 M3 enthusiast looking to bridge the gap between a high-end street car and a dedicated race machine, the BC Racing ER Series offers a "motorsport-first" engineering approach. By moving the secondary damping piston to the external canister, the system maintains its integrity under high-stress conditions. This is especially beneficial for the M3 Convertible, where the high 12kg rear spring rate helps counteract the platform's inherent weight and chassis flex, providing a flat and predictable cornering attitude. The system includes front pillowball camber plates as standard, eliminating the compliant factory rubber bushings to provide direct, unmediated steering feedback and allowing for aggressive track-ready alignment settings. Key Features: Reduced Damping Fade: External canisters keep fluid cooler by increasing the distance from hot brake components. Camber Adjustable Top Mounts: Precision-engineered aluminum plates allow for surgical alignment and increased turn-in bite. Patented Concave Locking Ring: BC Racing’s unique design ensures lower mounts remain securely locked, even under extreme vibration. Linear Piston Architecture: Provides a predictable and consistent damping feel for better driver confidence at the limit. Serviceable Construction: All components are individual and fully replaceable, ensuring the long-term serviceability of the system. Specifications: Vehicle Fitment: 2000–2006 BMW M3 (E46) Convertible / Coupe. Spring Rates (Default): Front: 8 kg/mm | Rear: 12 kg/mm. Spring Type: High-strength SAE9254 cold-wound steel. Construction: Black chrome-plated steel bodies for maximum corrosion resistance and anodized 6061-T6 aluminum. Warranty: 1-Year limited manufacturer's warranty.
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    BC Racing DS Series Coilover Suspension Kit - E46 M3 Convertible ...
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    T#:51355987
    Part#: I-121-DS
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    The BC Racing DS Series for the E46 M3 Convertible is built using motorsport-grade materials designed to withstand the rigors of spirited driving and technical road courses. Because the E46 M3 platform benefits greatly from increased front camber, this kit comes standard with front pillowball camber plates. These plates replace the compliant factory rubber mounts, providing unmediated feedback to the driver and allowing for aggressive alignment settings to maximize tire contact patches. Every DS Series kit is hand-assembled and fully rebuildable, with the option to upgrade to Swift Springs for even more consistent spring rates and reduced weight. Whether you're carving canyons or attending a weekend track day, the DS Series provides the stability and feedback needed to push the E46 M3 chassis to its limits. Key Features: Front Camber Plates: Precision-engineered aluminum alloy plates for surgical alignment and increased turn-in bite. Patented Locking Ring: Features a concave lower locking ring that prevents the system from vibrating loose even under track conditions. Bearing-Mounted Spring Platforms: Minimizes "spring binding" or popping during low-speed steering maneuvers. Fully Rebuildable: Every component, from the seals to the valving, is individual and replaceable for long-term serviceability. Customization Ready: Fully compatible with custom spring rates and Swift Spring upgrades for tailored track setups. Specifications: Vehicle Fitment: 2000–2006 BMW M3 Convertible (E46 Chassis). Spring Rates (Default): Front: 7 kg/mm | Rear: 12 kg/mm. Spring Type: High-strength SAE9254 cold-wound steel. Adjustability: Independent ride height, independent spring preload, and 30-way damping. Warranty: 2-Year limited manufacturer's warranty.
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    BC Racing HM Series Coilover Suspension Kit - E46 M3 Convertible ...
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    T#:51355994
    Part#: I-121-HM
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    For the E46 M3 Convertible owner who demands uncompromised geometry control, the BC Racing HM Series offers a motorsport-first engineering solution. By utilizing an inverted strut layout with a much larger internal piston shaft, the HM Series excels in maintaining wheel alignment during extreme lateral cornering—a critical factor for the MacPherson strut-equipped M3. The addition of external reservoirs ensures the damping fluid remains cool, preserving valving accuracy lap after lap. Standard front pillowball camber plates eliminate factory rubber "mush," providing direct and unmediated steering feedback. Because convertibles often require higher roll stiffness to compensate for chassis flex, the HM Series’ 12kg rear spring rate provides the stability needed to keep the car planted and responsive. Key Features: Enhanced Side-Load Resistance: The inverted design handles high lateral loads longer than traditional upright dampers without fatigue. Reduced Damper Fade: External canisters move fluid away from brake heat to maintain consistent lap times. Camber Adjustable Top Mounts: Precision-engineered aluminum plates allow for surgical alignment and increased turn-in bite. Patented Concave Locking Ring: BC Racing’s unique design ensures lower mounts remain securely locked even under track conditions. Fully Rebuildable: All components are individual and replaceable, ensuring the long-term serviceability of the system. Specifications: Vehicle Fitment: 2000–2006 BMW M3 Convertible (E46 Chassis). Spring Rates (Standard): Front: 8 kg/mm | Rear: 12 kg/mm (Swift Springs). Hardware: Black chrome-plated steel shock bodies and 6061-T6 aluminum components. Adjustment Type: Independent ride height, spring preload, and 2-way damping. Warranty: 1-Year limited manufacturer's warranty.
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    BC Racing ZX Series Coilover Suspension Kit - E46 M3 Convertible ...
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    T#:51356016
    Part#: I-121-ZX
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    $ 2,595.00 USD
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    For the E46 M3 Convertible enthusiast looking to bridge the gap between a high-end street car and a dedicated race machine, the BC Racing ZX Series offers an unparalleled engineering approach. By moving the compression valving to the external canisters, the system maintains its integrity under high-stress, high-temperature conditions, effectively eliminating "damper fade." For the E46 M3 platform—especially the convertible which requires higher roll stiffness to compensate for chassis flex—the ZX Series' 12kg rear spring rate and advanced damping provide the stability needed to maintain a flat cornering attitude. The system features standard front pillowball camber plates to eliminate factory rubber "mush," providing direct and unmediated steering feedback to the driver. Key Features: Enhanced Thermal Management: External canisters keep fluid away from brake heat to maintain valving accuracy lap after lap. Camber Adjustable Top Mounts: High-quality aluminum alloy plates allow for aggressive track alignments to maximize the tire contact patch. Pillowball Rear Mounts: Replaces rubber bushings with solid spherical bearings (on applicable kits) for increased response and precision. Patented Concave Locking Ring: BC Racing’s unique design ensures lower mounts remain securely locked, even under extreme track vibration. Fully Rebuildable: Every component is individual and replaceable, making this a long-term investment in the car's competitive potential. Specifications: Vehicle Fitment: 2000–2006 BMW M3 Convertible (E46 Chassis). Spring Rates (Default): Front: 8 kg/mm | Rear: 12 kg/mm (Swift Springs standard). Piston Design: Linear Twin-Piston with remote canister valving. Adjustment Range: 3-Way Independent (Rebound / Low-Speed Compression / High-Speed Compression). Warranty: 1-Year limited manufacturer's warranty.
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    BC Racing ZR Series Coilover Suspension Kit - E46 M3 Convertible ...
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    BC Racing - Corporate Logo
    T#:51356002
    Part#: I-121-ZR
    Back Ordered
    New Item
    $ 2,865.00 USD
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    $ 2,865.00 USD
    Free Shipping
    For the professional-level racer or the extreme enthusiast, the BC Racing ZR Series addresses the unique geometric and thermal requirements of the E46 M3 platform. By utilizing inverted front struts with a massive 42mm piston shaft, the ZR Series provides extreme structural rigidity, preventing geometry deflection under heavy braking and cornering loads. The 3-way adjustment allows the driver to "dial in" the car for specific obstacles; for instance, softening high-speed compression to soak up aggressive curbing while keeping low-speed compression firm for immediate turn-in response. Combined with standard pillowball top mounts, this system eliminates the "mushy" feel of factory rubber, providing direct, unmediated feedback to the driver. Key Features: Reduced Damper Fade: Remote external canisters move fluid away from hot brake components to ensure consistent lap times. Camber Adjustable Top Mounts: High-quality aluminum plates allow for aggressive track alignments to maximize the tire contact patch. Pillowball Rear Mounts: Replaces rubber bushings with solid spherical bearings for increased response and precision. Patented Concave Locking Ring: BC Racing’s unique design ensures lower mounts remain securely locked, even under extreme track vibration. Fully Rebuildable: Every component is individual and replaceable, making this a long-term investment in the car's competitive potential Specifications: Vehicle Fitment: 2000–2006 BMW M3 (E46) Convertible / Coupe. Spring Rates (Default): Front: 8 kg/mm | Rear: 12 kg/mm. Construction: TIG-welded steel and CNC-machined aluminum. Adjustment Range: 3-Way Independent (Rebound / Low-Speed Compression / High-Speed Compression). Warranty: 1-Year manufacturer’s warranty against defects.
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    Bilstein Coil Over Spanner Wrench Set (Notch Style)
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    Bilstein - Corporate Logo
    T#:1702
    Part#: 19101X
    Ships in 3 Business Days
    $ 22.03 USD
    Free Shipping on orders $49 and up
    Bilstein Coil Over wrench set for some PSS, PSS9 and PSS10 kits. Consists of a Large wrench and a Small wrench for adjusting the spring perch (76.25mm) and lock ring (75.75mm) on coil overs that require the rectangular notch style head (not round pin style adjuster). Can also be used with other coil over kits (H&R, Moton, JRZ, etc).
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    BC Racing Rear Damping Adjustment Extenders - BR Type
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    BC Racing - Corporate Logo
    T#:555864
    Part#: DMP-EXT
    Ships in 1-2 days
    $ 39.99 USD
    Free Shipping on orders $49 and up
    The rear damping adjuster on coilovers is usually hidden under a bunch of hard to reach interior panels requiring you to remove carpet, panels and sometimes even the rear seat back in order to adjust the dampening on your BC rear coilovers. The BC Racing rear extender adjuster allow you to make these adjustments without removing the rear interior. Simple make two small holes in the interior above the adjuster and the extension can be passed through the interior panels. Now the adjustments can be performed from above.
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    ECS Coilover Damping Extensions - 220MM
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    ECS - Corporate Logo
    T#:42369339
    Part#: 004673LA01
    In Stock
    Sale - Save 10% $ 36.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 33.29 USD
    Free Shipping on orders $49 and up
    Sale - Save 10%
    $ 36.99

    This product was last offered at the strikethrough price on
    05-03-2026

    $ 33.29 USD
    Free Shipping on orders $49 and up

    Fine-tuning your coilover damping shouldn’t mean stripping out your rear seats or interior panels. On many applications, rear shock adjusters are hidden behind carpet, trim, or seatbacks, making quick adjustments a hassle.

    The ECS Rear Damping Extension Kit solves that problem with a clean and functional solution. These flexible extensions relocate the adjustment knobs to an easily accessible point above the rear shock towers, letting you dial in your suspension from inside the cabin, no disassembly required.

    Installation is straightforward: simply drill a small access hole in your interior trim and route the extension cables through. The adjustment knobs can be removed to allow the line to pass through smaller openings, minimizing cutting. For proper installation, be sure to fully loosen the set screw, insert the cable, then securely tighten it using the provided Allen key.

    Kit Includes:

    (2) Rear damping adjuster extension cables

    Installation hardware and Allen key

    A smart upgrade for track cars, daily drivers, or anyone who values easy access to suspension tuning, without compromising interior fit and finish.

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    BMW E36 E46 E9X Coil Spring Spacer - 50mm - Priced Each
    affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
    KW Suspension - Corporate Logo
    T#:31390573
    Part#: 65030047
    Back Ordered
    $ 49.00 USD
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    $ 49.00 USD
    Free Shipping

    BMW E36 E46 E9X Coil Spring Spacer - 50mm - Priced Each

    The BMW E36 E46 E9X Coil Spring Spacer - 50mm - Priced Each is designed to be used with KW/ST coilover systems, providing additional lift to your vehicle beyond the standard coilover adjustments. Each spacer is 50mm thick and is sold individually, with one required per coil.

    • Adds 50mm of additional height to your vehicle’s suspension.
    • Ideal for use with KW/ST coilover systems.
    • Helps achieve desired ride height when coilovers alone are insufficient.
    • Sold individually for custom fitment.
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