{"product_id":"bmw-g80-g81-m3-and-g82-g83-m4-pre-preg-carbon-fibre-csl-rear-diffuser-by-form-2021","title":"BMW G80 G81 M3 \u0026 G82 G83 M4 Pre-Preg Carbon Fibre CSL Rear Diffuser by FORM (2021+)","description":"\u003cp\u003eSharpen the rear profile of your BMW G80 G81 M3 \u0026amp; G82 G83 M4 with the Pre-Preg Carbon Fibre CSL Rear Diffuser from FORM. Combining aerodynamic function with aggressive styling, this diffuser bolts directly in place of the factory unit for a clean OEM+ finish.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect OEM fitment\u003c\/strong\u003e — retains factory mounting points, wiring connectors, and sensor cut-outs where applicable\u003c\/li\u003e\n\u003cli\u003eAggressive vertical fins add visual width and motorsport presence\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUV-stable clear coat\u003c\/strong\u003e prevents yellowing, fogging, and weave degradation over time\u003c\/li\u003e\n\u003cli\u003eImproves underbody air extraction for reduced rear lift and improved stability\u003c\/li\u003e\n\u003cli\u003eDirect-fit replacement for the OEM lower rear bumper section\u003c\/li\u003e\n\u003cli\u003eBacked by \u003cstrong\u003eFORM Industries\u003c\/strong\u003e — a trusted name in OEM-level aftermarket upgrades for modern performance cars\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eMaterials \u0026amp; Construction:\u003c\/strong\u003e This component is produced from genuine \u003cstrong\u003epre-preg carbon fibre\u003c\/strong\u003e — the same autoclave-cured composite process used in Formula 1 and OEM performance parts. Unlike wet-layup or hand-laid alternatives, pre-preg delivers a tighter, more consistent weave, superior strength-to-weight ratio, and a show-finish gloss clear coat with full UV protection. The result is a part that looks as good in five years as it does on day one.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eVehicle Compatibility:\u003c\/strong\u003e Engineered for the \u003cstrong\u003eBMW G80 G81 M3 \u0026amp; G82 G83 M4\u003c\/strong\u003e, model years \u003cstrong\u003e2021+\u003c\/strong\u003e. 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.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e 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.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAbout FORM Industries:\u003c\/strong\u003e 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.\u003c\/p\u003e","brand":"FORM Industries","offers":[{"title":"Default Title","offer_id":55620892492116,"sku":"FO-BG80RDCSCF","price":749.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/0425\/3268\/files\/Screenshot2024-04-17at15.38.41_0354f5f8-e405-49b5-a141-4993197bec48.png?v=1778501596","url":"https:\/\/fifty9performance.co.uk\/products\/bmw-g80-g81-m3-and-g82-g83-m4-pre-preg-carbon-fibre-csl-rear-diffuser-by-form-2021","provider":"Fifty9 Performance","version":"1.0","type":"link"}