Audi 8Y S3 Sedan Carbon Fibre JC Style Rear Diffuser

Transform the rear of the Audi 8Y S3 Sedan with this JC Style Carbon Fibre Rear Diffuser. A full replacement lower diffuser with a sculpted, raised centre section, twin aero channels and long wings that sweep out to the corners of the rear bumper for an aggressive, motorsport-inspired finish.

Finished in a high-gloss clear coat over a twill weave for a deep, even carbon look.

Key Features

Real Carbon Fibre Construction

Lightweight, rigid and finished with a UV-protected high-gloss clear coat.

Sculpted Centre Section

A raised centre panel with aero channels either side adds depth and visual width to the rear of the car.

Full-Width Wings

Long outer wings follow the bumper out to each corner for a seamless, integrated look.

Direct Replacement Fitment

Designed to the factory rear bumper mounting points and clip locations for a precise fit.

Vehicle Fitment

Audi S3 8Y Sedan (2021-2024)

Designed for the S3 Sedan rear bumper. Not suitable for the Sportback, the RS3 or the previous 8V S3.

Please Note

Carbon fibre is a hand-laid material, so the weave pattern may vary slightly from the photographs. Professional installation is recommended. Our team will confirm fitment for your exact vehicle after purchase.

Why Choose Proven Performance Parts

We specialise in high-performance parts for European vehicles - particularly Volkswagen GTI & R models, Audi S/RS platforms, and BMW M vehicles. Every product we offer is carefully selected for its quality, fitment, and real-world performance - tested by enthusiasts, for enthusiasts.