BPP Performance B58 4.5" Downpipe Decat For BMW M140i M240i 340i 440i 550i 740i

This B58 4.5" Decat downpipe is the best value for money modification you could possibly get. It will provide noticeable power gains and a much more aggressive exhaust note. It produces lower temperatures and less exhaust back pressure due no flow restriction from the factory version. The cylinder charge is increased which contributes to maximum performance. You are also saving alot of weight in comparison to the factory race version. The Decat is mandrel-bent for better gas flow and maximum internal size to ensure ultimate performance without the loss of mid-range torque!