Rear Diffuser for BMW 3 Series G20 (2019+)

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Adding a more aggressive rear diffuser to your BMW can offer some performance benefits, but is primarily an aesthetic upgrade. BMWs naturally look great from the rear, why not make yours look even better?
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Turner Gloss Black ABS Diffuser - G20 M340i/xDrive
For Pre-LCI vehicles only (production date up to 07/2022)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Does not fit factory exhaust tips
Turner Motorsport - Corporate Logo
T#:642120
Part#: 008653LA01
In Stock
Sale - Save 19% $ 527.99

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

$ 429.00 USD
Free Shipping
Sale - Save 19%
$ 527.99

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

$ 429.00 USD
Free Shipping
Upgrade the exterior styling on your BMW G20 M340 with the Turner In-House engineered Gloss Black Rear Diffuser. Using all factory mounting locations, this diffuser is a direct bolt-on upgrade that can be installed in minutes. Featuring a deep profile, an aggressive fin design, this exclusive design from Turner Motorsport will be sure to turn heads!
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Turner Carbon Fiber Diffuser - G20 M340i / xDrive
For Pre-LCI vehicles only (production date up to 07/2022)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Does not fit factory exhaust tips
Turner Motorsport - Corporate Logo
T#:642041
Part#: 013748LA01
In Stock
Sale - Save 10% $ 805.99

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

$ 725.39 USD
Free Shipping
Sale - Save 10%
$ 805.99

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

$ 725.39 USD
Free Shipping
Upgrade the exterior styling on your BMW G20 M340 with the Turner In-House engineered Carbon Fiber Rear Diffuser. Using all factory mounting locations, this diffuser is a direct bolt-on upgrade that can be installed in minutes. Featuring a deep profile, an aggressive fin design, and hand-laid 2x2 pre-preg carbon fiber, this exclusive design from Turner Motorsport will be sure to turn heads!
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M Performance Style Glossy Black Diffuser - G20 M340
For Pre-LCI vehicles only (production date up to 07/2022)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For M-Sport Bumpers Only
Suvneer - Corporate Logo
T#:5872726
Part#: G20PDIFF340GB
Ships in 5 Business Days
$ 250.99 USD
$ 250.99 USD
M-Performance inspired glossy black plastic diffuser for G20 M-Sport. Direct bolt-on, no modification required.

M Performance Style Glossy Black Diffuser - 330i incl. xDrive ...
For Vehicles with M Sport bumper only
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Suvneer - Corporate Logo
T#:6212247
Part#: G20PDIFF330-GB
Ships in 5 Business Days
$ 150.00 USD
Free Shipping on orders $49 and up
$ 150.00 USD
Free Shipping on orders $49 and up
M-Performance inspired glossy black plastic diffuser for G20 M-Sport. Direct bolt-on, no modification required.

Spec-D M Sport Black ABS Performance Style Rear Diffuser - 2019-2020 ...
For Pre-LCI vehicles only (production date up to 07/2022)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Spec-D Tuning - Corporate Logo
T#:14684347
Part#: LFRDG2019GBMP-BN
Special Order: No Guaranteed ETA
$ 152.99

This product was last offered at the strikethrough price on
02-09-2026

$ 80.99 USD
$ 80.99 USD
Brand new in original box Comes with 1 piece M performance style rear diffuser Made of high-quality, black ABS plastic Paintable to match your vehicle Decreases the drag force, improving aerodynamics Gives your vehicle a more aggressive sporty appearance
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3D Design M-Sport Carbon Rear Diffuser - G20 3-Series
For Pre-LCI vehicles only (production date up to 07/2022) For Vehicles Equipped with the M-Performance Aerodynamics Kit (S715A)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
3D Design - Corporate Logo
T#:4634865
Part#: 3108-32021
Ships in 3 Business Days
$ 2,295.00 USD
Free Shipping
$ 2,295.00 USD
Free Shipping
This gorgeous rear diffuser from 3D Design boasts all the major values this brand embodies; exquisite attention to detail, masterful finish work, and supreme fitment. Featuring a dry carbon-fiber weave pattern laid with care and attention, and a deep rich clear coat finish that will last for years to come, this is a part worth far more than its weight in carbon. 3D Design is focused on high-quality styling components that allow you to personalize the look of your BMW & remain true to the car's original form. Inspired by European tuning trends & Japan's unique VIP tuning style, their wide range of lips, diffusers, side skirts, & spoilers are made from high-quality urethane or super light, super strong prepreg dry carbon and install easily to your factory bumpers & skirts to offer an understated, aggressive performance look. For non-M340i installation, the following OEM parts are needed: 51128079607 51718091107 Fits 3D Design 4 tail tip exhaust or M340i OEM exhaust
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M Performance Style Matte Black Diffuser - 330i incl. xDrive ...
For Vehicles with M Sport bumper only
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Suvneer - Corporate Logo
T#:6212248
Part#: G20PDIFF330-MB
In Stock
Sale - Save 54% $ 125.00

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

$ 57.69 USD
Sale - Save 54%
$ 125.00

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

$ 57.69 USD
M-Performance inspired matte black plastic diffuser for G20 M-Sport. Direct bolt-on, no modification required.
ADRO G20 M340i LCI Carbon Rear Winglet Set
For LCI M-Sport Models Only!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ADRO INC. - Corporate Logo
T#:27605446
Part#: A14A70-1301
Ships in 3 Business Days
$ 650.00 USD
$ 650.00 USD

The 2023+ BMW G20 M340i LCI Rear Winglet offers an aggressive aesthetic to complete the rear-end of the vehicle. Crafted from premium carbon fiber, this original design is hand-made and offers the best in the market, making it the perfect choice for BMW fans.

Includes:

  • 2 Carbon Diffuser Side Fins
  • 3M Tape
  • Hardware
  • Installation manual
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Autotecknic Dry Carbon Extended-Fin Competition Rear Diffuser - G20 3...
For Pre-LCI vehicles only (production date up to 07/2022)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Requires M-Performance Rear Valence
AUTOTECKNIC - Corporate Logo
T#:21275575
Part#: ATK-BM-0353
Ships in 7 Business Days
$ 500.00 USD
$ 500.00 USD
Carbon fiber is a staple in the performance world and has been incorporated into motorsports since the early 80s. Over time companies have taken it upon themselves to create new carbon products to add to your car that may have not been originally available. Autotecknic is no different. If you're looking for a carbon addition that has been made to the highest standards with premium materials, then Autotecknic's line of carbon additions is your one-stop shop. Add some carbon to your M-Performance rear valance! Dry carbon fiber's name comes from its manufacturing process. Dry carbon fiber is formed by using a "pre-preg" or impregnated piece of carbon materials. This piece of carbon is first placed into a mold and then into a sealed autoclave to cure properly. This method creates the least amount of waste and forms a lighter version of carbon than the “wet” method. The autoclave vacuuming process of making dry carbon means fewer pinholes and virtually no air pockets in the carbon. Dry carbon is the highest-quality version of carbon fiber products that are produced.
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Suvneer M Performance Style Diffuser - Dry Carbon Fiber - BMW G20 3' ...
For vehicles with M-Sport rear bumper.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Suvneer - Corporate Logo
T#:51320843
Part#: G20PDIF330-DCF
Ships in 5 Business Days
New Item
$ 825.00 USD
$ 825.00 USD
The Suvneer G20 LCI Dry Carbon Diffuser represents the intersection of precision engineering and aggressive styling.
Suvneer M Sport Carbon Fiber Diffuser - BMW G20 330i
For LCI models with M Sport bumper
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Suvneer - Corporate Logo
T#:51356034
Part#: G20MTSUVDIF-LCI
Ships in 5 Business Days
New Item
$ 833.00 USD
$ 833.00 USD
The Suvneer G20 LCI Carbon Fiber Diffuser for the 330i M Sport is a precision-engineered aerodynamic component.
G20 3-Series M-Sport Carbon Rear Diffuser
For Pre-LCI vehicles only (production date up to 07/2022) For Vehicles Equipped with the M-Performance Aerodynamics Kit (S715A)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
3D Design - Corporate Logo
T#:587530
Part#: 3108-32011
Ships in 3 Business Days
$ 2,295.00 USD
Free Shipping
$ 2,295.00 USD
Free Shipping


M Performance Style Matte Black Diffuser - M340i incl. xDrive ...
For Pre-LCI vehicles only (production date up to 07/2022)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Suvneer - Corporate Logo
T#:6212246
Part#: G20PDIFF340-MB
Ships in 5 Business Days
$ 125.00 USD
$ 125.00 USD
M-Performance inspired matte black plastic diffuser for G20 M-Sport. Direct bolt-on, no modification required.
REAR DIFFUSER, CARBON
For Pre-LCI vehicles only (production date up to 07/2022)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Genuine BMW M Performance - Corporate Logo
T#:625443
Part#: 51192459740
Ships in 4 Business Days
4% off MSRP $ 1,450.00

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

$ 1,397.99 USD
Free Shipping on orders $49 and up
4% off MSRP
$ 1,450.00

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

$ 1,397.99 USD
Free Shipping on orders $49 and up
G20 M340 ABS Rear Window Spoiler With ABS Diffuser
For Pre-LCI vehicles only (production date up to 07/2022)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Enthusiast Bundles - Corporate Logo
T#:25042562
Part#: 008653LA01EBKT
Ships on Oct 8, 2026
Sale - Save 37% $ 709.65

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

$ 449.00 USD
Free Shipping on orders $49 and up
Sale - Save 37%
$ 709.65

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

$ 449.00 USD
Free Shipping on orders $49 and up

Upgrade your BMW G20 M340's exterior with the Turner In-House designed Gloss Black Rear Diffuser. Recognizing the satisfaction of G20 M340 owners with Turner's Carbon Diffuser, the engineers at Turner Motorsport created a more cost-effective OEM + version.

This in-house engineered diffuser is designed for aftermarket exhausts up to 4" in diameter, adding an aggressive appearance that complements the factory appeal of your M340. Crafted from UV-stabilized ABS polymer, the diffuser achieves a deep high gloss shine, setting your vehicle apart with an aggressive and sporty style. The dual tip/dual outlet design is compatible with aftermarket exhaust systems up to 4" in diameter.

Installation is hassle-free, requiring no drilling, cutting, or modification. Simply remove your current valance, align the tabs, and press the diffuser into place. Make a bold statement and let your BMW stand out with the Turner Gloss Black Diffuser!

  • Designed and engineered in-house using 3D laser scanning and CAD technology
  • Mimics lower bumper section & OE diffuser lines for enhanced OEM features
  • Compatible with aftermarket exhausts up to 4.0"
  • Mounts to OE clip locations and OE holes on the outer edges
  • Lightweight, vacuum-formed UV-stabilized gloss black ABS polymer

Enhance your car's appearance with the G20 rear window spoiler from Turner Motorsport. Crafted from high-quality UV-stabilized polymer, this gloss black spoiler adds a sporty design with a sleek look. The straight-edged roof spoiler design, featuring a center cutout, requires no drilling, cutting, or modifications.

The spoiler matches all other gloss black components from Turner Motorsport and installs effortlessly. After aligning, remove the liner from the attached high-strength dual-sided tape and firmly press the spoiler onto the window. Make a distinctive statement and elevate your vehicle's style with Turner Motorsport's free Gloss Black Rear Window Spoiler.

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G20 M340 Carbon Diffuser & Carbon High Kick Spoiler
For Pre-LCI vehicles only (production date up to 07/2022)
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Enthusiast Bundles - Corporate Logo
T#:24909620
Part#: 013748LA01EBKT
Ships on Nov 5, 2026
$ 2,075.02 USD
Free Shipping on orders $49 and up
$ 2,075.02 USD
Free Shipping on orders $49 and up

Enhance the allure of your BMW G20 M340i/xDrive with the Turner Motorsport Carbon Fiber Diffuser – a result of meticulous engineering by Turner's experts dissatisfied with existing G20 M340 diffuser options. This direct bolt-on upgrade, designed in-house using advanced 3D laser scanning and CAD technology, redefines exterior styling. The diffuser boasts a deep profile, an aggressive fin design, and hand-laid 2x2 pre-preg carbon fiber, ensuring a head-turning experience. Elevate your BMW's presence and make a bold statement with Turner's exclusive Carbon Fiber Diffuser.

Key Features & Specifications:

  • In-house design for precision fitment
  • Mounts to existing bumper insert locations with OE hardware
  • Crafted from lightweight, hand-laid epoxy resin pre-impregnated 2x2 twill weave carbon fiber
  • Autoclave cured for superior durability
  • Clear coated for excellent finish durability and UV resistance
  • Can be painted for a color-matched look with standard body shop prep work
  • Rated to withstand 100°C (212°F) continuous use, and 120°C (248°F) intermittent use

As part of the Enthusiast Bundle, the Carbon High Kick Trunk Spoiler from Turner Motorsport offers an aggressive style upgrade for the rear end of your G20. The hand-laid gloss carbon fiber and a design that seamlessly aligns with the G20 body lines create a truly beautiful finish. Easy installation, with no drilling required – simply clean the trunk surface, remove the backing from the pre-attached high-strength double-sided tape, line it up, and press firmly down. For optimal adhesion, we recommend installing in a warm environment.

Design Features and Benefits:

  • Aesthetic Upgrade
  • Follows the deck lid and roof contours to accentuate OEM features
  • In-house design for precision fitment
  • Includes pre-applied adhesive tape
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