Audi A4 B9 S-Line / S4 Rear Diffuser – Prepreg Dry Carbon Fiber (2020–2022 Sedan) Door Locks and everything needed for a

and everything needed for a clean

Special Note:

Defrost and heated functions are available on the larger mirror only and are compatible with vehicles originally equipped with these features

The precision TIG-welded and ported 4-1 merge collector promotes smooth exhaust flow and improved exhaust gas velocity into the turbocharger

Enhances rear-end styling and aerodynamic presence

Audi A4 B9 S-Line / S4 Rear Diffuser – Prepreg Dry Carbon Fiber (2020–2022 Sedan) Door Locks and everything needed for aThe 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