BMW 4 Series G22/G23 Side Skirts & Extensions Gloss Black - M Performance Style Sill Blades, Side Splitters & Rocker Panel Trims for Coupe/Convertible (2020+) | ABS Piano Black

High-gloss sill extensions for BMW 4 Series G22 and G23

Transform the profile of your 4 Series with BLAK by CT Carbon aero side extensions. Crafted from robust ABS plastic and finished in a deep, high-gloss black, these M Performance inspired sill blades sharpen the stance, elongate the bodyline and give your coupe or cabrio a premium motorsport look.

We run these on our own cars and our customers love the fit and finish. It is an easy win for road presence and OEM-plus styling.

Key features

• M Performance inspired styling for an aggressive, OEM-plus appearance
• Durable ABS construction with a mirror-like piano black finish
• Designed as side skirt extensions for a clean, flush visual fit
• Lightweight rocker trim that enhances the car’s silhouette
• Supplied as a left and right set for both sides of the vehicle

Compatible vehicles

• BMW 4 Series G22 Coupe - 2020 onwards
• BMW 4 Series G23 Convertible - 2020 onwards

Also searched as: side splitters, sill blades, rocker panel extensions, aero kit side skirts, body styling side panels, gloss piano black skirts, M Performance look side extensions for BMW 4er G22 G23.

Why choose these side skirt extensions

• Instant visual upgrade that complements Shadowline trim and other black styling parts
• High-gloss black finish pairs perfectly with front splitters, rear diffusers and lip spoilers
• Quality you can trust from BLAK by CT Carbon with consistent surface finish
• Great value exterior styling that elevates your BMW’s road presence

Finish and materials

Made from ABS plastic for strength and resilience with a smooth, high-gloss black surface that matches popular factory black trims. Ideal for an OEM-plus body kit look.

Installation and fitting

Professional installation recommended. For a hassle-free fit, book our in-house service at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote and availability. Always test fit prior to final installation.

What our customers say

Consistently praised for the sleek finish, neat alignment and the way they complete the M Performance aesthetic. A favourite upgrade for both daily drivers and show builds.

SEO friendly search terms: BMW G22 side skirt extensions, G23 side splitters, BMW 4 Series rocker covers, aero side blades, gloss black body kit parts, coupe cabrio styling, M Performance style skirts, ABS gloss black side trims, BMW 4er G22 G23 exterior upgrade.