BMW 4 Series & i4 Gran Coupe G26 Pre-Preg Carbon Fibre Side Skirts by FORM (2021+)

Sharpen the lateral styling of your BMW 4 Series & i4 Gran Coupe G26 with the Pre-Preg Carbon Fibre Side Skirts from FORM. Designed as a direct-fit upgrade over the factory side trim, these elements deliver track-inspired styling with OEM-level build quality.

Key Features:

• Direct OEM fitment - retains factory mounting points, wiring connectors, and sensor cut-outs where applicable
• Engineered for direct OEM fitment with no cutting or modification required
• Connects the front splitter and rear diffuser into a cohesive aero package
• UV-stable clear coat prevents yellowing, fogging, and weave degradation over time
• Autoclave-cured pre-preg carbon fibre construction for a consistent 2x2 twill weave and show-quality clear-coat finish
• Backed by FORM Industries - a trusted name in OEM-level aftermarket upgrades for modern performance cars

Construction: Built using pre-preg carbon fibre - carbon cloth pre-impregnated with resin, then vacuum-bagged and autoclave-cured under precise heat and pressure. This is the same process used for OEM supercar bodywork and track-homologated race parts. The benefit over cheaper wet-layup carbon is a tighter weave, a more consistent finish, and a clear coat that won't yellow or cloud over time.

Fitment Notes: Built to suit the BMW 4 Series & i4 Gran Coupe G26, model years 2021+. This is a direct-fit replacement or overlay depending on variant - the part matches the factory mounting pattern and panel geometry of the listed models, so a standard install is bolt-on / clip-on with no cutting or drilling required. If your car was built with a non-standard options pack, it's worth checking fitment with our team before ordering.

Installation: Fitment is straightforward for an experienced installer using standard hand tools. We strongly recommend installation by a qualified bodyshop or detailer, particularly for exterior components that require panel alignment, adhesive bonding, or painted-surface preparation. Full fitment guidance is provided in the box, and our support team can help confirm the best approach for your specific car.

The FORM Industries Difference: Where many aftermarket brands compete on price, FORM competes on fit and finish. Every part in the catalogue is developed on real cars - not just in CAD - with panel-gap tolerances, material selection, and finishing processes benchmarked against the OEM part it replaces. It's why FORM has become one of the go-to names for BMW M, Audi RS, and Porsche GT owners looking for an upgrade that genuinely measures up.