Process West Black Reverse Inlet Manifold - Drive By Wire Bosch 74mm- MY1999-2021 Exhausts_Exhaust Backboxes This latest generation 4 Stage

This latest generation 4 Stage RCM dry sump system has been developed with world renowned motorsport engineering specialist Auto Verdi Racing

It is essential engines modified to 500+bhp have the most reliable system for clamping the cylinder heads onto the block assembly to avoid the heads lifting under load at high levels of boost pressure

0ltr JDM Impreza Spec C 2002 - 2007

11140AA150 - Genuine Subaru Dip Stick (x1)

Process West Black Reverse Inlet Manifold - Drive By Wire Bosch 74mm- MY1999-2021 Exhausts_Exhaust Backboxes This latest generation 4 StageThe 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