Please note, this is a pre-order item. The ETA for this Diffuser is approximately October 25, 2026. All pre-order sales are final and cannot be canceled.
CAP Carbon Fiber Diffuser For 2020-2025 Audi B9.5 S4
Enhance the look of your Audi with the B9.5 Audi S4 CAP Carbon Fiber Diffuser V1. Made with high quality carbon fiber, this diffuser will enhance the sporty look of your Audi while still remaining elegant. Comes with function LED brake light in the middle.
The horizontal opening for tips measures to approximately 8.75 inches.
Please note, this carbon diffuser does not fit the B9.5 Audi A4 vehicle, S-Line or not, as the rear bumper is not the same as the B9.5 Audi S4.
Install Instructions Disclaimer:
Professional install of this carbon diffuser by someone who has aftermarket product experience is required.
Rear bumper must be removed to install this carbon fiber diffuser properly.
