Forceline carbon fiber rear bumper side covers for BMW M3 G80. Custom European manufacturing for seamless integration and styling.
Complete your carbon fiber aero package with our BMW M3 G80/G81/M4 G82 Rear Bumper Side Skirts — also known as diffuser extensions. These precision-crafted carbon parts wrap around the rear bumper corners and flow perfectly into the diffuser area, giving your M a unified and race-inspired rear profile.
Constructed from 2×2 Twill 3K SPREAD Carbon Fiber using high-strength epoxy resin, these extensions are both lightweight and durable. Finished with a Triple UV-Protective Clear Coat, they offer a deep gloss finish that resists sun damage and complements your diffuser and side skirts.
Whether paired with a full carbon package or added as a standalone detail, these diffuser extensions transform the rear-end styling into a cohesive, aggressive statement.
Mounts directly to the OEM rear bumper using automotive adhesive or included hardware. Surface prep is critical for secure installation. We recommend professional installation for optimal alignment and long-term durability.
Compatible with BMW M3 G80/G81 and M4 G82 (2021+)
2×2 Twill 3K Spread Carbon Fiber construction
Wrap-around design that extends the rear diffuser
Lightweight, epoxy-bonded structure for strength
High-gloss, UV-protected finish
Seamless integration with rear diffuser and side skirts
Designed and quality-checked by Forceline
