BMW S55 Downpipe For F80 M3, F82/F83 M4, F87 M2 - ARM Motorsports

HIGHLIGHTS • Up to +30whp / 30wtq• Enhanced Exhaust Note• 304 Stainless Steel • Improved Turbo Spool Best Sounding M4 Exhaust Setup PROFILE The ARM F80 M3 Downpipes are the ultimate solution for improving power, throttle response, and exhaust note on your S55 powered F80 M3.  Our goal for the ARM F80 M3 Downpipes was to provide a solution that would maximize power and torque, fit perfectly, and sound extraordinary. Catless downpipes are considered a standard upgrade for any F80 M3 owner looking to safely push their S55 engine beyond basic Stage 1 tuning.  With Stage 2 and up tuning, higher boost increases back-pressure at the OEM catalysts and chokes the S55's turbochargers, causing them to work harder and shortening their life.  The ARM F80 M3 Downpipes relieve the stressful back-pressure caused by high-boost tunes, allowing the exhaust to flow freely, increasing power and torque, all while extending the longevity of your S55's turbochargers.  On our test car, af