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2014+ BMW M3 & M4 3" Downpipe / Test Pipe
NPBoosted 2014-2017 BMW 3" Turbo Downpipe M3 / M4 F80 F82 F83 S55 Test Pipe Exhaust Catless
Gains up to 25 Rwhp and 30 Rwtq with proper Tuning Heavy duty Mandrel bent 304 stainless steel TIG Welded Assembly with Brushed Steel Finish Additional wideband O2 bungs Hi-Flow full 3" Design for Maximum Performance Will Provide a More aggressive Tone From Exhaust Direct, bolt in Replacement