BMW 3 Series Rear Diffuser – G20 G21 M Sport, Gloss Black (2019+)

Upgrade the rear end of your BMW 3 Series with this M Sport style BMW 3 series rear diffuser in gloss black, designed specifically for G20 Saloon and G21 Touring models. The sculpted contours add a dynamic, aggressive rear profile while accommodating the dual exhaust setup.

Why Choose This BMW 3 Series Rear Diffuser

Engineered specifically for G20/G21 M Sport models — not a universal fit — this diffuser is shaped to accommodate the dual exhaust configuration for a clean, integrated fit. The deep gloss black finish complements any body colour, while the sculpted profile enhances rear airflow and stability at higher speeds.

Made from durable, weather-resistant ABS plastic built for everyday use, this diffuser installs at factory mounting points with minimal modification. Fits M Sport bumpers only, so check your trim and exhaust configuration before ordering.

Ready for a sharper, more aggressive rear stance? This diffuser bolts straight on. Browse the full BMW 3 Series parts range to complete your build.