BMW M3 M4 F80 F82 DOWNPIPES WITH 200 CELL HI-FLOW SPORTS CATS & HEAT SHIELD 14-
MTC Motorsport BMW M3 M4 F80 F82 Stainless Steel Downpipes With Hi-Flow 200 Cell Sports Cat and Heat Shield. BMW M4 F82 2014-. BMW M3 F80 2014-. The M3 downpipes are machined from T-304 high-grade stainless steel and are tig welded in house.