S55 Bimmer Source 3in Single Midpipe - F80 M3 / F82 M4

Transform the sound and performance of your BMW M3 & M4.

Ditch the restrictive stock midpipe, eliminate back pressure, and unleash gains of up to 18whp and 30wtq with the Bimmer Source S55 single midpipe, engineered for a perfect fit on the BMW F80 M3 and F82/F83 M4. Each midpipe comes with an exhaust brace for a hassle-free installation and precise alignment.

Key Features:

• Smooth mandrel bends designed for maximum airflow with zero drone
• Proven gains of up to 18whp on stock turbos, with even higher results on upgraded setups
• Lifetime warranty covering defects and fitment
• 90-day return window for peace of mind
• Fast shipping within 1–2 business days
• Guaranteed spot-on fitment