Process West Black Reverse Inlet Manifold - Drive By Wire - WRX / STI 2006 - 2012 Cooling_Header and Intercooler Tanks We also offer a Superlight

We also offer a Superlight version for even faster engine response weighing in at just 3

STI's homologated engine mounts offer reduced flex in engine movement

A genuine Subaru metal gasket

The studs are naturally stronger due to their extra thickness and superior material quality but they also benefit from a much coarser rolled thread (meaning you can tighten them far more than the standard bolt which in turn will offer a much higher clamping load between both the cylinder head and block faces where you head gasket is situated

Process West Black Reverse Inlet Manifold - Drive By Wire - WRX / STI 2006 - 2012 Cooling_Header and Intercooler Tanks We also offer a SuperlightThe Process West range billet manifolds is a no holds barred manifestation of what is possible under the hood of a WRX STI when perfect aesthetics meet high end performance. What you see here is the result of years of research and testing, multiple prototypes and a ground up fully featured design process that makes this a key asset of our product range. Available in two major configurations they feature a full billet plenum with generous billet bell