Find Parts That Fit Your Vehicle

Rear Diffuser

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?
Sort By:

Vorsteiner - Corporate Logo
T#:9416032
Part#: 4001BMV
Ships on Sep 2, 2025
Starting at $ 1,895.00 USD
Starting at $ 1,895.00 USD
GTS: This Vorsteiner rear diffuser was designed to provide an aggressive, individual stylistic touch to your BMW without being overbearing. Constructed from high-quality 1x1 twill weave, this part attaches easily and accentuates your BMW's natural body lines, thus creating a high-class performance look. Professional installation is recommended. Vorsteiner is a company that was conceived through the imagination of creating the highest quality parts for the most discerning vehicles and clientele. The relentless pursuit of advancement and perfection is seen not only in the unmatched automotive parts, but also in the hands of carbon fiber craftsmen to create purely sensational parts for the most deserving and elite vehicles. GTS-V: The VRS GTS-V Aero Carbon Fiber Rear Diffuser from Vorsteiner is a high quality, lightweight diffuser that has been developed to add a significantly more aggressive style to your BMW! Rear diffusers on standard street cars are limited in how effective they can be in aiding with downforce, but with aggressive fins can still aid in preventing air turbulence at the rear of the vehicle.
Show More Show Less
Spec-D Tuning - Corporate Logo
T#:14684347
Part#: LFRDG2019GBMP-BN
Ships in 7 Business Days
$ 93.99 USD
$ 93.99 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
Show More Show Less
Dinan Carbon Fiber Rear Diffuser Surround - G80/G82/G83
5X Entries For Our Spin To Win Sweepstakes!
Dinan - Corporate Logo
T#:23020158
Part#: D980-0049
Ships in 5 Business Days
$ 849.99 USD
Free Shipping
$ 849.99 USD
Free Shipping
Rather than replace the full diffuser and have potential fitment challenges with various exhaust options Dinan has opted to retain the factory gloss black lower portion of the diffuser and only replace the upper diffuser surround with a carbon fiber accent piece. This solution not only guarantees the carbon cosmetics will always play well with any personalization of the exhaust that is adopted but also offers an economical option compared to much pricier alternatives. Together with the Dinan Rear Side Splitters, the combination creates a "full" rear diffuser that is restrained but elevated and creates a nuanced OEM+ option for the marketplace. Features: 2x2 gloss twill dry carbon fiber (pre-preg) manufactured to be impact-resistant, durable, and strong Clear-coated for maximum UV protection and fade resistance Utilizes factory mounting tabs for an easy installation with a clean fit and finish Pair together with the Dinan Rear Side Splitters to complete the full rear look
Show More Show Less

Vorsteiner - Corporate Logo
T#:11857199
Part#: BMV8050
Special Order: No Guaranteed ETA
$ 2,495.00 USD
$ 2,495.00 USD
In full carbon fiber, the fins extend beyond the rear bumper, providing race-inspired enhancements which directly replace the OEM lower diffuser. The Vorsteiner aero kit comprises of 4 components that amplify the visual appearance, providing an upgrade to the BMW M8 platform.
Show More Show Less

Dinan Carbon Fiber Rear Side Splitters - G82/G83
5X Entries For Our Spin To Win Sweepstakes!
Dinan - Corporate Logo
T#:23020150
Part#: D980-0050
Ships in 5 Business Days
$ 499.99 USD
Free Shipping
$ 499.99 USD
Free Shipping
Dinan Carbon Fiber Rear Side Splitters (rear winglets) offer a simple straightforward solution to enhancing the rear quarters of your G82/G83 M4. Together with the Dinan Rear Diffuser Surround, the combination creates a "full" rear diffuser that is restrained but elevated and creates a nuanced OEM+ option for the marketplace. Features: 2x2 gloss twill dry carbon fiber (pre-preg) manufactured to be impact-resistant, durable, and strong Clear-coated for maximum UV protection and fade resistance Includes mounting screws and also utilizes factory mounting tabs for an easy installation with a clean fit and finish Pair together with the Dinan Rear Diffuser Surround to complete the full rear look
Show More Show Less
Vorsteiner - Corporate Logo
T#:11857197
Part#: BMV8025
Special Order: No Guaranteed ETA
$ 1,195.00 USD
$ 1,195.00 USD
The Vorsteiner aero kit comprises of 4 components that amplify the visual appearance, providing an upgrade to the BMW M8 platform. Amplifying the M8’s existing body lines, these eyebrows give the look that the platform deserves.
Show More Show Less

Vorsteiner - Corporate Logo
T#:5122289
Part#: BMV3350
Special Order: No Guaranteed ETA
$ 2,995.00 USD
$ 2,995.00 USD
Carbon fiber body parts are starting to become a dime-a-dozen, but this has caused a reduction in part quality. Vorsteiner takes great care to ensure every carbon fiber component they produce is of the highest quality, putting every piece through an independent inspection process to look for any potential imperfections before they leave the facility. In addition, the high gloss clear coating applied to their carbon fiber parts is a UV ray inhibiting coating that won't discolor or peel after only a few years of sun exposure. Looking to make your G8x M3 or M4 more unique? Then this may be the perfect option for you! Vorsteiner's VRS Aero Rear Diffuser is designed for those looking to add some flair and function to their vehicle. This diffuser is composed of durable Carbon Fiber material which comes in a glossy finish. In addition to being lighter and more aggressive looking, this diffuser also allows for an increase in downforce thanks to its design.
Show More Show Less
Vorsteiner - Corporate Logo
T#:38229084
Part#: BMV5650
Special Order: No Guaranteed ETA
New Item
$ 1,695.00 USD
$ 1,695.00 USD
In celebration of Vorsteiner's 20th anniversary, the company has introduced a modernized version of the V-CSL Carbon Fiber Program for the BMW E46 M3. The new V20 program features dual acorn-shaped snorkels integrated into the front bumper, along with a redesigned one-piece front spoiler. The double-sided carbon fiber hood includes raised vents on both sides to enhance hot air extraction from the engine bay. Additionally, the rear diffuser now incorporates dual diffuser elements, optimizing airflow. Limited to just 103 units, the V20 pays tribute to the remarkable horsepower per liter of the BMW E46 CSL.
Show More Show Less

Vorsteiner - Corporate Logo
T#:396626
Part#: 6001BMV
Special Order: No Guaranteed ETA
$ 1,895.00 USD
$ 1,895.00 USD

This Vorsteiner rear diffuser was designed to provide an aggressive, individual stylistic touch to your BMW without being overbearing. Constructed from high-quality 1x1 twill weave, this part attaches easily and accentuates your BMW's natural body lines, thus creating a high-class performance look. Professional installation is recommended.

Vorsteiner is a company that was conceived through the imagination of creating the highest quality parts for the most discerning vehicles and clientele. The relentless pursuit of advancement and perfection is seen not only in the unmatched automotive parts, but also in the hands of carbon fiber craftsmen to create purely sensational parts for the most deserving and elite vehicles. 

Show More Show Less

Dinan Carbon Fiber Rear Side Splitters - G80
5X Entries For Our Spin To Win Sweepstakes!
Dinan - Corporate Logo
T#:23020157
Part#: D980-0048
Ships in 5 Business Days
$ 499.99 USD
Free Shipping
$ 499.99 USD
Free Shipping
Dinan Carbon Fiber Rear Side Splitters (rear winglets) offer a simple straightforward solution to enhancing the rear quarters of your G80 M3. Together with the Dinan Rear Diffuser Surround, the combination creates a "full" rear diffuser that is restrained but elevated and creates a nuanced OEM+ option for the marketplace. Features: 2x2 gloss twill dry carbon fiber (pre-preg) manufactured to be impact-resistant, durable, and strong Clear-coated for maximum UV protection and fade resistance Includes mounting screws and also utilizes factory mounting tabs for an easy installation with a clean fit and finish Pair together with the Dinan Rear Diffuser Surround to complete the full rear look
Show More Show Less
Dinan Carbon Fiber Rear Diffuser - A90 Supra
5X Entries For Our Spin To Win Sweepstakes!
Dinan - Corporate Logo
T#:21045556
Part#: D980-0037
Ships in 5 Business Days
$ 699.99 USD
Free Shipping
$ 699.99 USD
Free Shipping
Dramatic exits come standard with this carbon fiber upgrade. The multi-piece Dinan rear diffuser spotlights the rear of the car and creates a new "floor" that visually appears to make the vehicle lower and more aggressive. Despite the diffuser encompassing the exhaust exits, great care was taken to ensure enough room was supplied to accommodate even large tipped exhausts, like Dinan's own. Additionally, the diffuser adds wrap arounds to each of the rear quarters that allows a harmonious and uniform visual continuation with the Dinan front lip and side skirts for a perfectly matched cosmetic solution. Features: 2x2 gloss twill carbon fiber manufactured to be impact resistant, durable and strong Clear coated for maximum UV protection and fade resistance Includes 3M double sided tape and mounting screws for easy installation with a clean fit and finish
Show More Show Less