Fabspeed Primary Sport Cat Downpipes - BMW F1X M6Why We Choose HJS Catalytic Converters: HJS German imported catalytic converters are made from some of the highest grade materials you can find in a catalytic converter. This yields high performance gains and longevity so it wont deteriorate over time like lower grade catalytic converters. These catalytic converters flow up to 93 95% of a straight pipe in most applications. The benefit is that you get the "straight pipe sound" while still being able

Other manufacturers valves using cylindrical springs with adjustable pre-load often experience restricted piston travel and a reduction in flow volume

Installation is a five minute job

IE Tuscan Connecting Rods VW & Audi 144X20 | Fits 1

while providing extra strength

Forge Motorsport has actually been able to make this system work with no spring in the dump valve at all

Sportwagen FWD)

and increase power

FITS all Mk4 Golf/GTi/R32

For use on Manual Trans cars only

mountain bike lovers

2x Front threaded coilover dampers

Fits all W205 AMG C63/S factory valances