2021-2027 BMW M3/M4 Carbon Fiber Rear Diffuser (G80, G82, G83)

As an enthusiast favorite, the BMW M3/M4 has been a staple in the car community for years, and with the introduction of the G80, G82, and G83, BMW has allowed enthusiasts to relive their M-series dreams. This Rear Diffuser is Feral Auto's own design for pushing that further.

This is a custom Feral Auto design, not a copy of any factory piece, built from real dry carbon fiber using an autoclave pre-preg process for a denser, more consistent panel than wet-layup alternatives — a rigid, motorsport-grade finish. Much like a trunk spoiler, canards, and other aerodynamic parts, a rear diffuser helps your BMW's aerodynamics and overall downforce for great on and off-track performance. Carbon fiber looks great against any paint color BMW offers on the M3 and M4, and each kit includes the necessary hardware to make installation quick and easy for experienced DIY enthusiasts.

Benefits Of Carbon Fiber

Carbon fiber has many great benefits over ABS and other spoiler materials. Carbon fiber is durable, lightweight, and provides a much better look. These are some of the reasons that carbon fiber body parts are used in a variety of different components on all types of cars.

Available Carbon Finishes

• Gloss (Standard) — our standard high-gloss 2x2 twill weave
• Matte Carbon — same weave, low-sheen matte finish
• Forged Carbon — marbled, high-strength forged carbon pattern

Please note: Matte and Forged Carbon finishes are non-refundable once production has started.

Current Lead Time

Current estimated lead time is approximately 55-65 business days from order to ship.

Fitment / Compatibility

2021-2027 BMW G80 M3
2021-2027 BMW G82 M4
2021-2027 BMW G83 M4