2017–2019 Audi RS3 8V Sedan Rear Bumper Diffuser Lip – Carbon Fiber

Refine and sharpen the rear end of your Audi RS3 8V Sedan with this carbon fiber rear bumper diffuser lip. Molded as a direct retrofit for the factory rear bumper, it adds a more aggressive, performance-oriented lower rear profile with an authentic carbon weave finish.

Build

• Material: Genuine carbon fiber, autoclave cured using a 3D design and CNC moulding process for precise panel geometry, consistent surface quality, and an authentic weave appearance over carbon-look ABS or fiberglass alternatives
• Surface finish: High-gloss epoxy-polished finish in carbon black that showcases the natural carbon weave and resists UV exposure, moisture, and road debris through sustained use
• Configuration: Single-piece diffuser lip for the lower rear bumper
• Weight: Lightweight carbon construction adds negligible weight to the rear of the vehicle

Design & Aerodynamics

• Aggressive stance: Diffuser lip profile sharpens and lowers the visual stance for a more track-inspired rear end
• Carbon aesthetic: Directional weave and gloss black finish complement the factory RS3 rear bumper styling for a coordinated, motorsport-grade look
• Factory-style integration: Precision-molded to follow the contours of the factory rear bumper for a clean, seamless fit

Fitment

• 2017–2019 Audi RS3 8V Sedan
• Fits the RS3 8V factory rear bumper only — not compatible with aftermarket or non-RS3 bumper configurations
• Not compatible with the standard A3 or S3 rear bumper, or with the later 8Y generation RS3
• Body style: Sedan only — not confirmed for Sportback variants

Package Contents

• 1 × carbon fiber rear bumper diffuser lip
• Adhesive tape for installation
• Mounting screws for installation

Installation

• Two mounting options: Fit with the included adhesive tape for a reversible install, or with the included screws for a more permanent, secure fitment
• Surface prep: If using adhesive tape, thoroughly clean, degrease, and dry the rear bumper before fitting to ensure maximum adhesion
• Alignment: Dry-fit and check the lip sits centred and even across the bumper before committing to either method
• Professional installation recommended for correct panel positioning and a clean, gap-free finish — particularly if using the screw-mount option

Before You Install

• Confirm your car is an RS3 8V Sedan (2017–2019) before ordering — this will not fit the A3, S3, or the later 8Y RS3
• Screw mounting is permanent — it requires drilling into the bumper, so decide on your method and confirm placement before starting
• Work in moderate temperatures and allow the adhesive to cure fully before washing the car
• Take care when parking rear-in — lower rear panels sit close to kerbs and parking blocks