Carbon Fiber Rear Diffuser for BMW M3 G80 / M4 G82 / G83 (2021+)

The rear end of the G80 M3 and G82 M4 is defined by the factory diffuser, and this carbon fiber rear diffuser replaces it entirely with a wide, aggressive multi-fin carbon fiber aero piece that transforms the lower rear bumper into something that belongs on a race-prepared M car. 

The diffuser spans the entire lower rear bumper opening with four distinct fin sections rising from a wide base blade, flanked by upswept outer corner fins that mirror the factory bumper geometry. The 2x2 twill weave carbon surface catches light across every panel and edge with the depth and clarity that only real carbon fiber delivers.

• Material: Real 2x2 twill weave carbon fiber with high-gloss UV-resistant clear coat
• Finish: High-gloss clear coat
• Fitment: BMW M3 G80 Sedan (2021+) / BMW M4 G82 Coupe (2021+) / BMW M4 G83 Convertible (2021+). Dual exhaust cutouts sized precisely for factory M3 and M4 quad exhaust tips.
• Style: Full-replacement multi-fin rear diffuser with four-fin aero design, dual exhaust cutouts, and upswept outer corner fins
• Includes: 1x carbon fiber rear diffuser + mounting hardware
• Installation: Direct OEM replacement, removes factory diffuser unit, no cutting required

Pairs perfectly with carbon fiber mirror caps, a carbon fiber front lip, carbon fiber side skirts, and a carbon fiber trunk spoiler for the complete G80 and G82 carbon exterior build.