M3 M4 Downpipes



M3 M4 Downpipes


We are proud to introduce our 3" Catless Downpipes for the S55 F80/F82 M3 & M4. These 3" downpipes are the best bang for buck mod available for your S55, with gains from 25hp when tuned.

By eliminating the restrictive catalytic converters in the factory downpipes, backpressure is reduced significantly which results in faster spool, an increase in power & a more aggressive exhaust note.


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