BMW G22, M440i Carbon Fibre M Performance Style Side Skirts

BMW G22 / G23 M440i Carbon Fibre M Performance Style Side Skirts

Close the gap between the wheels on your BMW M440i with these M Performance Style side skirt extensions — a long, tapered carbon blade down each flank that drops the apparent ride height without touching the suspension.

The G22 has a high sill and a lot of flat body between the arches. These extensions add a defined lower edge along the full length of it, drawing the eye down and making the whole side of the car read lower and longer.

The M Performance profile is a clean tapered blade with no fins or steps — it reads as a factory option rather than an accessory, which is what you want on a car that is not a full M.

They mount over the factory sill trim rather than replacing it, so nothing structural is removed and the original panel stays untouched underneath.

Key Features

Genuine Carbon Fibre

Real carbon construction with a deep gloss clear coat, lighter and stiffer than a moulded plastic extension.

M Performance Profile

A clean, uninterrupted lower edge with no fins or steps, so it reads as factory-fitted.

Add-On Design

Mounts over the factory sill trim. The original panel is not removed or cut, so the change is entirely reversible.

Full-Length Coverage

Runs the whole span between the wheel arches, which is what makes the car read lower and longer.

Fits Coupe and Convertible

The G22 coupe and G23 convertible share the sill, and it suits the 430i as well as the M440i.

Supplied as a Matched Pair

Left and right skirts produced together, with fixings included.

Styling Benefits

• Lower, longer side profile
• Visually links the front lip and the rear diffuser
• Genuine carbon weave that matches other carbon parts
• No cutting or permanent modification
• Fully reversible at resale or end of lease

Vehicle Fitment

BMW G22 M440i Coupe (2020+)
BMW G22 430i Coupe (2020+)
BMW G23 M440i Convertible (2020+)
BMW G23 430i Convertible (2020+)

Please Note

Please select your exact model above so we can confirm the correct part before dispatch. These are shaped for the M Sport sill.

Professional installation is recommended. A panel this long has to be aligned along its whole length before the fixings are tightened, or the gap along the sill will taper.

Side skirt extensions sit lower than the factory sill. Take care with kerbs and when using a workshop hoist.

Carbon fibre is a natural woven material. Minor variation in weave pattern between pieces is characteristic of the material and not a defect.

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.