3″ Catless Stainless Steel Pipe for the N54 135i & 335i which now feature a cast stainless steel mouth. These 3″ downpipes are THE best bang for the buck mod available, with gains from 25hp & 30tq when tuned. By eliminating the restrictive catalytic converters in the factory Stainless Steel Pipe, backpressure is reduced significantly which results in faster spool, an increase in power & a more aggressive exhaust note. Rather than necking down closer to the turbos like most of our competitors, our 3″ Stainless Steel Pipe feature a full 3″ design up to the 2.5″ flange which allows an increase of flow. Our 3″ Stainless Steel Pipe are hand crafted from SS304 stainless steel.
1:Adds 20-25 HP to the wheels & 25-30 TQ to the wheels.
2:CAD/CAM designed cast bell mouth for seamless flange to pipe transition.
3:Hand made from mandrel bent, tig welded 3″ 304 grade stainless steel.
4:Smooth radius bends to decrease turbulence and increase flow.
5:Fits RHD and LHD models with no modification necessary.
2006-2013 E92 BMW 335is
2008-2010 E82 BMW 135i