BMW G80 M3 / G82 M4 Gloss Black F1 Rear Diffuser

📦 In Stock & Ships from California within 1–2 Business Days

Aggressive Motorsport Design. OEM-Grade Fitment.

Transform the rear of your G80 M3 or G82 M4 with this Gloss Black F1-Style Rear Diffuser, designed to deliver a race-inspired aesthetic while maintaining perfect OEM fitment.
Crafted with precision-molded ABS construction, this diffuser brings a sleek, high-gloss finish and a bold Formula 1–inspired center LED light for maximum street presence.

Unlike lower-quality replicas, this piece is built to fit seamlessly — no large gaps, uneven edges, or flimsy plastic. Every contour aligns with factory mounting points, ensuring an OEM-like fit and finish that complements the M3/M4’s aggressive lines.

Features & Details

• ✅ High-Gloss Piano Black Finish – Deep reflective shine to match factory trims.

• ✅ OEM-Style Precision Fitment – Engineered using 3D scanning and CAD data for accuracy.

• ✅ F1-Style Center Light Design – Adds a motorsport-inspired aesthetic.

• ✅ Durable ABS Construction – Lightweight yet impact-resistant.

• ✅ Direct Bolt-On Replacement – Uses factory mounting locations (no major modifications required).

• ✅ Enhances Rear Aerodynamics – Channel airflow for improved rear stability and style.

Fitment

• BMW G80 M3 (2021–2025)

• BMW G82 M4 (2021–2025)

• Compatible with both OEM and aftermarket exhaust systems that retain factory diffuser layout.

While this diffuser is designed for direct bolt-on installation, professional installation is highly recommended to ensure perfect alignment and secure mounting.

Why Buy from Legendary Auto Builders

When you purchase from Legendary Auto Builders, you’re investing in:

• 🔧 Quality-tested fitment and hand-inspected parts

• 🚚 Fast California fulfillment (no long China shipping waits)

• 💎 Premium materials and factory-level quality control

• 🤝 Trusted reputation among top performance shops in the U.S.