A carbon rear diffuser is one of the most effective ways to finish an aggressive rear end. Here's what it does and how to choose.
What a diffuser does
A diffuser manages airflow exiting from under the car, smoothing it to reduce drag and, on track, add a little rear stability. Even as a styling piece, the fins give a purposeful, motorsport look.
Diffuser vs. full rear bumper
Some upgrades are a diffuser insert that mounts to your existing bumper; others are full carbon rear bumpers. Inserts are easier to fit; full bumpers give the biggest transformation.
Fitment
Rear aero is highly trim-specific — confirm your exact bumper and model year before ordering.
Shop rear aero
Browse carbon fiber bumpers & diffusers in the catalog.