BMW 2 Series 220i & M240i G42 Pre-preg Carbon Fibre Rear Diffuser by FORM (2021+)

Take the rear end of your BMW 2 Series 220i & M240i G42 Pre-preg to the next level with the Pre-Preg Carbon Fibre Rear Diffuser from FORM. Engineered to replace the factory lower bumper section, this diffuser improves underbody airflow while delivering a dramatic, motorsport-inspired rear silhouette.

Key Features:

• Direct OEM fitment — retains factory mounting points, wiring connectors, and sensor cut-outs where applicable
• Aggressive vertical fins add visual width and motorsport presence
• UV-stable clear coat prevents yellowing, fogging, and weave degradation over time
• Direct-fit replacement for the OEM lower rear bumper section
• 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.

Vehicle Compatibility: Engineered for the BMW 2 Series 220i & M240i G42 Pre-preg, model years 2021+. The part uses factory mounting hardware and (where relevant) existing wiring connectors, so a standard install requires no modification to your car's bodywork or wiring loom. Chassis codes matter — please confirm yours matches the listed fitment above before placing your order.

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.