BMW M2 G87 Pre-Preg Carbon Fibre CS Rear Diffuser by FORM

Introducing the FORM Carbon Fibre CS Rear Diffuser, designed exclusively for the BMW G87 M2. Engineered to reflect the bold styling of the M2 CS, this diffuser is precision-crafted from premium 2x2 twill pre-preg carbon fibre, delivering a perfect balance of motorsport aesthetics, aerodynamic efficiency, and lightweight performance. Forge Automotive supplies this diffuser and can fit it at our Darwen and Leeds sites.

Developed using advanced CAD technology, the FORM CS Rear Diffuser gives OEM-level fitment while dramatically improving the rear profile of the G87 M2. The result is a sharper, more purposeful look that complements the M2’s performance-driven character.

Key features

• Premium 2x2 twill pre-preg carbon fibre construction
• Lightweight, high-strength performance material
• CS-inspired design for an bold OEM+ appearance
• Precision CAD-engineered for excellent fitment and finish

What's in the box

• 1 x pre-preg carbon fibre CS rear diffuser

Fitment

• BMW M2 (2023+, G87)

Supplied, fitted and finished by Forge Automotive

Forge Automotive can fit this diffuser at either of our sites: Darwen in the North West or Gildersome, Leeds in Yorkshire. Forge Automotive can also finish this diffuser before fitting: paint protection film (PPF) to guard the carbon, a colour change or satin wrap, or colour matching to the car. Ask when ordering. See more BMW M2 G87 parts.

Common questions

What is pre-preg carbon fibre?
Pre-preg is carbon cloth that arrives from the mill already impregnated with a measured amount of resin. The part is laid up in the mould and cured under heat and pressure, usually in an autoclave or oven. Because the resin content is controlled, the finished part is lighter, stiffer and more consistent than a hand-laid one, with a cleaner weave and better dimensional accuracy. It costs more to make, which is why pre-preg parts sit at the top of a range.

What does "dry carbon" mean?
Dry carbon is the everyday name for a pre-preg part: carbon fibre all the way through, rather than a carbon skin over a fibreglass or plastic base. The surface still has a clear lacquer, but there is no excess resin in the laminate, so the part is light and rigid.

What is a 2x2 twill weave?
The weave pattern in the carbon cloth. In a 2x2 twill each strand passes over two and under two, which gives the diagonal pattern BMW use on their own M Performance and M carbon parts. Choosing 2x2 means aftermarket and factory carbon on the same car match.

How do I look after a carbon fibre part?
Treat the lacquer like paint: wash with pH-neutral shampoo, avoid harsh solvents, and wax or seal it. UV is what ages carbon, so a protected finish lasts longer. Forge Automotive can apply paint protection film to any carbon part before fitting, which guards against stone chips and keeps the weave clear.

Fitting is available on every part at our North West (Darwen) and Yorkshire (Leeds) workshops. Prefer to fit it yourself? Fitting instructions ship with every part.

In-stock parts ship in 3–5 working days, fully insured. Every part is fitment-checked before dispatch.

Covered by the manufacturer warranty. Fitting through our workshop keeps it intact.