Carbon Fiber Rear Diffusers
Carbon fiber rear diffusers for BMW, Mercedes-Benz, Toyota GR Supra, Tesla, Audi and more. Choose from OEM, Performance, DTM, GTS and GT styles, each listed with chassis-specific fitment. We ship from California.
Audi B8.5 S5 A5 S Line Coupe RS Carbon Fiber Rear Diffuser
Audi B8.5 S5 A5 S Line Coupe DTM Carbon Fiber Rear Diffuser
BMW G07 X7 M Sport Rear Diffuser
Shop Rear Diffusers by Vehicle
BMW M Cars
Rear diffusers for the G80 M3 and G82 M4, G87 M2, F80 M3 and F82 M4, F87 M2, E90 E92 E93 M3, E46 M3 and E82 1M, plus the F91 F92 F93 M8, F85 X5 M and E71 X6 M.
BMW 3, 4 & 5 Series M Sport
For cars with the M Sport rear bumper: E90 E91 3 Series, E92 E93 3 Series, the F32 F33 F36 4 Series, the F10 5 Series and the G30 5 Series.
BMW X5 & X6
M Sport rear diffusers for the G05 X5 and G06 X6.
Mercedes-Benz AMG
W211 E55 and E63 AMG, W204 C63 AMG, W218 CLS 63 AMG, the W219 CLS, R230 SL 55 AMG and C238 E Coupe.
Toyota, Tesla, Audi & More
The Toyota GR Supra A90, Tesla Model 3, Audi B8 S5 and A5, Audi B7 A4 and S4, Lexus GS F Sport, Ferrari 458 Italia and VW Golf R32.
How to Choose a Rear Diffuser
1. Match your rear bumper
A rear diffuser mounts to the lower edge of the rear bumper, so it must match the bumper on your car. M cars, AMG models and M Sport or AMG Line packages each use a different rear bumper from the base model. Check the fitment table on the product page, or contact us with your car's year, model and trim.
2. Match your exhaust layout
Diffusers are shaped around the exhaust outlets. A diffuser designed for quad tips will not fit a car with dual tips, and some listings offer separate single, dual or quad versions.
3. Choose the material
Most of our diffusers are real carbon fiber with a clear coat. Some are dry carbon fiber, which is lighter and has a finer finish. A few are made from ABS or polypropylene in gloss black or a carbon fiber look finish. The material is listed on every product page.
4. Pick a style
Many cars offer several styles, such as OEM style, Performance, DTM, GTS or GT. OEM and Performance styles stay close to the factory look, while DTM, GTS and GT styles use larger fins for a more aggressive, race-inspired rear end.
FAQ
Will a rear diffuser fit my car?
It depends on your rear bumper and exhaust layout. Each product page lists the exact chassis, models and bumper type it fits. Contact us with your car's year, model and trim, and we will confirm fitment before you order.
Is the diffuser real carbon fiber?
Most of our diffusers are real carbon fiber with a clear coat, and some are dry carbon fiber. A few are made from ABS or polypropylene. The material is clearly listed on each product page.
Does a rear diffuser improve performance?
On a street car, an aftermarket rear diffuser is mainly a styling upgrade. It gives the rear end a more aggressive, race-inspired look and frames the exhaust tips.
Do I need to modify my bumper to install a diffuser?
Most of our diffusers are designed to mount to the factory rear bumper. Some installations require drilling, and professional installation is recommended for the best alignment. Check the product page for installation details.
Not sure what fits my car?
Contact us with your car's year, model and trim, and we will confirm fitment before you order.