Process West Intake Manifold Track Version Standard Rotation Black For Use w/ Bosch DBW 74mm Throttle Body 2002-2014 WRX / 2004-2021 STI YMM_2021_PORSCHE_911_CARRERA_GTS resulting in more precise gear

resulting in more precise gear engagement and a confident shifting experience

5in Silver 2015-2021 STI

Anodized Black (Washers)

Enhance your Subaru’s handling and cornering precision with the Whiteline Rear Positive Traction Kit

Fits the following Models:

Process West Intake Manifold Track Version Standard Rotation Black For Use w/ Bosch DBW 74mm Throttle Body 2002-2014 WRX / 2004-2021 STI YMM_2021_PORSCHE_911_CARRERA_GTS resulting in more precise gearThe 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. Featuring a full billet plenum, with generous billet bell mouths and thick wall polished CNC