BMW M3 F80 & M4 F82 F83 Carbon Fibre Rear Diffuser by FORM (2014-2019)
Delivery & Availability
Delivery & Availability
Not all products are held in stock due to the specialist nature of many performance parts. While most items are available for next working day dispatch, selected products may carry extended supplier or production lead times.
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Description
Take the rear end of your BMW M3 F80 & M4 F82 F83 to the next level with the 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
- Lightweight carbon fibre construction with a UV-protected gloss clear coat
- Direct-fit replacement for the OEM lower rear bumper section
- Aggressive vertical fins add visual width and motorsport presence
- Improves underbody air extraction for reduced rear lift and improved stability
- Backed by FORM Industries — a trusted name in OEM-level aftermarket upgrades for modern performance cars
Materials & Construction: Manufactured from high-grade carbon fibre with a UV-stable clear coat, this component combines lightweight construction with the distinctive weave finish that defines performance-car styling.
Vehicle Compatibility: Engineered for the BMW M3 F80 & M4 F82 F83, model years 2014-2019. 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.
About FORM Industries: FORM Industries is a premium manufacturer of aftermarket exterior and interior upgrades for BMW, Audi, Mercedes-Benz, Volkswagen, Porsche, Tesla, and other modern performance vehicles. Every FORM part is engineered in-house, tested against OEM fitment standards, and finished to a specification that matches — and often exceeds — the factory equivalent. From pre-preg carbon fibre through to OEM-grade gloss black, every component is built to deliver the look, feel, and longevity expected at this price point.
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