BMW F91/F92/F93, M8 Carbon Fibre AC Style Side Skirt

BMW F91/F92/F93, M8 Carbon Fibre AC Style Side Skirt

Complete the profile of your M8 with the AC Style Carbon Fibre Side Skirt Extensions, a pair of half-length sill extensions that lower the visual line along the flanks and tie the front and rear treatments together.

Manufactured from carbon fibre with a high-gloss twill finish, each piece is a half-length extension that mounts to the rear portion of the sill and sweeps up into a pronounced fin. Because it covers only the rear section rather than the whole sill, it is a far more accessible way into a carbon side profile.

They suit an owner who has already addressed the front and rear and wants the side profile to match, and they are the piece that makes a carbon package read as deliberate rather than assembled.

Key Features

Carbon Fibre Construction

Manufactured from carbon fibre with a deep gloss finish across the visible face.

Pronounced Rear Fin

Each extension sweeps up into a large fin at the rear, giving the side profile a strong motorsport reference at a fraction of the cost of a full skirt.

Supplied as a Pair

Left and right sections are supplied together, moulded as mirrored parts so the car reads the same from either side.

Pre-Drilled Mounting Points

Mounting tabs are formed into the moulding at the factory locations, so each skirt locates against the sill without fabrication.

High Gloss Twill Finish

A clear gloss finish over a consistent twill weave, matched to the look of factory BMW M Performance carbon components.

Precision Fitment

Shaped specifically for the rear section of the M8 sill, following the original body line.

Performance Benefits

Enhanced Side Profile

Lowers the visual line along the flanks and makes the car look wider and more planted from side on.

Improved Aerodynamic Profile

Designed to complement the vehicle's aerodynamic profile and help manage airflow along the side of the car.

Lightweight Exterior Upgrade

Carbon fibre construction keeps the added mass minimal.

Completes Your Carbon Fibre Build

The side profile is what ties a front lip and rear diffuser together; without it a carbon package reads as unfinished.

Vehicle Fitment

BMW F91 M8 / M8 Competition Convertible (2019+)

BMW F92 M8 / M8 Competition Coupe (2019+)

BMW F93 M8 / M8 Competition Gran Coupe (2019+)

Please Note

Professional installation is strongly recommended.

This is a half-length rear sill extension, not a full-length side skirt. It covers the rear portion of the sill only.

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

Side skirts sit low on the car and are exposed to kerbs and driveways. Ride height and driving style should be considered before fitting.

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.