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We all know how bad the OEM Subaru Top Mount Intercooler Gaskets are. They are the greatest source of leaks in the entire intake stream. Fear not, ...
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High-quality replacement TMIC Y-Pipe Kit Just bought an aftermarket or STI TMIC that requires an STI Y-Pipe to fit? Want to replace your chewed up ...
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High-quality replacement TMIC Y-Pipe Kit Just bought an aftermarket or STI TMIC that requires an STI Y-Pipe to fit? Want to replace your chewed up ...
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Grimmspeed™ knows that many of you replace all of your exhaust gasket at the same time while installing aftermarket exhaust parts on your car. We'v...
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Grimmspeed™ knows that many of you replace all of your exhaust gasket at the same time while installing aftermarket exhaust parts on your car. We'v...
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The turbocharger is one of the hottest components in your engine bay and can have some really negative effects on its surroundings. As it gets red-...
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GrimmSpeed™ OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed we have worked with endless amounts of aftermarket gaskets, non...
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GrimmSpeed™ OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed they have worked with endless amounts of aftermarket gaskets, n...
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GrimmSpeed™ OEM Style Gasket, OEM quality without the high OEM price. At GrimmSpeed™ we have worked with endless amounts of aftermarket gaskets, no...
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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 ...
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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 ...
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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...
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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 ...
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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...
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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...
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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 ...
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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 ...
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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...
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GSC set out to create the best performance, longest lasting Subaru oversize (+1) 37mm intake valves available to the aftermarket. Using advanced 3D...
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GSC Power-Division Beehive valve springs use an ovate wire which utilizes advanced material heat treatment methods for superior load loss capabilit...
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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...
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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...
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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...
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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...
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