VRSF Catless Downpipe (N55 E8X/E9X 135i/335i)
VRSF Catless 3.5″ Downpipe for the BMW N55 engine, as found in the E8X 135i and E9X 335i (earlier N54 models, see here).
The catalytic converters in the downpipes on the N55 engines are a highly restrictive component. This 304 stainless steel, free-flowing downpipe will free up horsepower, especially on tuned cars, while also allowing for faster turbo spool and a more aggressive exhaust note. Features a CFD-optimised cast stainless merge collector and smooth radius bends for maximum flow.
Gains from 25-30bhp.
Available on back-order