GrimmSpeed Phenolic Thermal Manifold Spacer WRX (2002-2014) STI (2004-2018) Variations:GrimmSpeed 8mm Phenolic Thermal Spacer WRX/STI (2002-2014) LGT (2005-2009) Blox Racing adjustable rear toe

Blox Racing adjustable rear toe kits for the Integra are manufactured from forged alloy steel

2008-2014 Subaru WRX

either the trumpet or plumb back outlet is fully open

Cars with an ECU tune that increases boost levels will enjoy this part as you will never have to worry about it leaking under boost

GrimmSpeed Phenolic Thermal Manifold Spacer WRX (2002-2014) STI (2004-2018) Variations:GrimmSpeed 8mm Phenolic Thermal Spacer WRX/STI (2002-2014) LGT (2005-2009) Blox Racing adjustable rear toeIn case you weren't aware, the cooler your intake air is the more HP your car will achieve. One way to reduce intake air temperatures is to raise the intake manifold off the engine with GrimmSpeed's Phenolic Intake Manifold to Engine Thermal Spacer. Phenolic spacers have been used for years by many other specialized automotive companies, but GrimmSpeed is one of the first to offer this technology to the Subaru world. Benefits Notes: Phenolic spacers