Products

Features Swirl polished heads for smoother air flow over the valve Back cut to reduce valve weight for higher rpm, higher boost pressure and allow ...

Features Swirl polished heads for smoother air flow over the valve Back cut to reduce valve weight for higher rpm, higher boost pressure and allow ...

When GSC set out to create the best performing and longest lasting valves available, they knew they would need to turn to the cutting edge of desig...

The GSC Super Alloy Exhaust Valves which have been designed to accommodate those with high horsepower and high EGT sets that need a valve that can ...

When GSC set out to create the best performing and longest lasting valves available, they knew they would need to turn to the cutting edge of desig...

Running high horsepower with high EGT's requires a valve that will last in 2000F conditions. GSC 33mm +1 Oversize Super Alloy Exhaust valves have c...

Features Swirl polished heads for smoother air flow over the valve Back cut to reduce valve weight for higher rpm, higher boost pressure and allow ...

Features Swirl polished heads for smoother air flow over the valve Back cut to reduce valve weight for higher rpm, higher boost pressure and allow ...

When GSC set out to create the best performing and longest lasting valves available, they knew they would need to turn to the cutting edge of desig...

GSC set out to create the best performance, longest lasting Subaru oversize (+1) 37mm intake valves available to the aftermarket. Using advanced 3D...

GSC Power-Division Beehive valve springs use an ovate wire which utilizes advanced material heat treatment methods for superior load loss capabilit...

GSC Power-Division Billet S1 camshafts for the USDM STi and WRX with Intake only AVCS. These will not drop any low end power, and will creating mor...

GSC's S1 camshaft set for the Dual AVCS equipped STI is designed for the stock turbo all the way to a GT35R. The horsepower range for the GSC Stage...

STAGE 2: GSC's S2 camshaft set is designed for those running a GT35R or larger turbo. Stage 2 cams are great for Subaru owners running a GT35R turb...

GSC's Dual AVCS S2 camshaft set for the Subaru STI is designed for those running a GT35R or larger turbo. Stage 2 cams are great for Subaru STI own...

GSC Power-Division Billet S3 camshafts for the USDM STi and WRX with Intake only AVCS. These cams are built to suite the high horsepower drag Subys...

GSC Power-Division Viton Valve Stem Seals for the WRX & STI include the entire 6mm valve size seal set (8 intake and 8 Exhaust)so you will have...

H&R OE sport springs are designed to offer a significant performance advantage over your stock suspension without compromising smoothness or no...

It’s not hard to determine why Sport Springs are H&R’s best selling spring. H&R Sport Springs offer an enhanced look by reducing your vehic...

It’s not hard to determine why Sport Springs are H&R’s best selling spring. H&R Sport Springs offer an enhanced look by reducing your vehic...

It is no secret that H&R builds some of the best made and highest performing springs in the industry, designed and manufactured to be stronger,...