Audi B9.5, RS5 Carbon Fibre AE Style Rear Diffuser With LED Light

Audi B9.5, RS5 Carbon Fibre AE Style Rear Diffuser With LED Light

Rebuild the rear of your RS5 with the AE Style Carbon Fibre Rear Diffuser, a multi-piece assembly with deep vertical strakes, wrap-around exhaust surrounds and an integrated LED element in the centre.

The kit comprises the main diffuser body plus a pair of carbon side blades that extend the treatment out to the rear quarters. Manufactured from carbon fibre with a high-gloss twill finish, it replaces the factory valance rather than sitting over it, so there is no added depth or visible edge.

It is the most aggressive rear treatment available for the B9.5 and the natural pairing for a carbon front lip and side skirts.

Key Features

Dry Carbon Fibre Construction

Manufactured using a dry carbon process, chosen for its rigidity and the depth of its finish under direct light.

Integrated LED Light

A centre-mounted LED element is built into the diffuser, in the style used on Audi Sport competition cars.

Multi Piece Kit

Supplied as the main diffuser plus a pair of side blades, so the treatment carries across the full width of the rear.

Deep Vertical Strakes

Full-depth fins run the width of the centre section for a far more purposeful rear than the standard valance.

High Gloss Twill Finish

A clear gloss finish over a consistent twill weave, matched to the look of factory Audi Sport carbon components.

Performance Benefits

Transformed Rear End

Replaces the largest plain surface at the back of the car, making it the most significant exterior change available at the rear.

Improved Aerodynamic Profile

Designed to complement the aerodynamic profile of the car and help manage airflow around it.

Lightweight Exterior Upgrade

Carbon fibre construction keeps the added mass minimal.

Completes Your Carbon Fibre Build

Matches the weave and finish of the rest of the Proven Performance Parts Audi carbon range for a consistent exterior package.

Vehicle Fitment

Audi B9.5 RS5 Coupe (2020+)

Audi B9.5 RS5 Sportback (2020+)

Select your body style at checkout. The Coupe and Sportback are not interchangeable on this part.

For the facelifted B9.5 rear bumper. The pre-facelift B9 uses a different valance and is not covered.

Please Note

Professional installation is strongly recommended.

The factory rear valance is removed. This is a replacement panel, not an overlay.

The LED element requires a 12V connection. Wiring into the vehicle loom should be carried out by an auto electrician.

Parking sensors, where fitted, are transferred from the original valance.

Minor preparation, alignment or adjustment may be required during installation to achieve optimal fitment.

Due to the nature of carbon-fibre manufacturing, slight variations in weave pattern may occur between products.

Why Choose Proven Performance Parts

We specialise in high-performance parts for European vehicles — including 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.