Audi A4 B9 S-Line / S4 Rear Diffuser – Prepreg Dry Carbon Fiber (2020–2022 Sedan) Door Locks Color Unpainted Black Diffuser +

Color Unpainted Black Diffuser + Red Reflective Tape

RGB your way: choose colors & effects in the app

and deliver a more aggressive induction sound — all while maintaining daily drivability

Technical support is available for assistance

and everything needed for a clean

Audi A4 B9 S-Line / S4 Rear Diffuser – Prepreg Dry Carbon Fiber (2020–2022 Sedan) Door Locks Color Unpainted Black Diffuser +The rear end of your B9 deserves the same attention as the front. This Prepreg Dry Carbon Fiber Rear Diffuser for the Audi A4 S Line and S4 Sedan delivers aggressive styling with precision fitment, giving your build that refined performance look without going over the top. Designed to enhance the factory rear bumper lines, this diffuser adds depth, sharp edges, and true motorsport inspired presence. Constructed using advanced prepreg dry carbon and