GrimmSpeed Phenolic Thermal Manifold Spacer WRX (2002-2014) STI (2004-2018) Variations:GrimmSpeed 8mm Phenolic Thermal Spacer WRX/STI (2002-2014) LGT (2005-2009) The race sound of the

The race sound of the exhaust will not drone inside the car but give you that quality tone you desire

The issue with the OEM gaskets is that they are very expensive for what you get

LR3 / Discovery 3 | '05 - '09

either the trumpet or plumb back outlet is fully open

The EVO X SPEC lightweight flywheels are recommended for highly modified street or racing vehicles

GrimmSpeed Phenolic Thermal Manifold Spacer WRX (2002-2014) STI (2004-2018) Variations:GrimmSpeed 8mm Phenolic Thermal Spacer WRX/STI (2002-2014) LGT (2005-2009) The race sound of theIn 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