Riss Racing Stainless Catback Exhaust System BMW 135i 08+

This is the world record holding Riss Racing 135i exhaust. Holding records in both Dyno numbers of 422 whp & 1/4 mile ET record of 11.90 @ 116.35 mph. The exhaust is constructed of mandrel bent 304 stainless steel. Starting with a Y pipe from the downpipes too a full 3 inch all the way back. No corners cut even the internals of the muffler are constructed of the highest grade 304 stainless with the signature RR plating this is the #1 exhaust to run on your 135i!

Dyno shows results of an 135i with Riss Racing Exhaust and Catless Downpipes. (downpipes sold seperately).