Empower Your JDM Engine With GSC Power Division Components

Discover the GSC Power Division collection at HD Werks, offering genuine, high-performance components engineered for superior engine and powertrain upgrades. These original parts, designed for racing and aftermarket tuning, deliver custom solutions that optimize power output and dynamic control. Crafted with Japanese innovation, GSC products provide authentic quality and robust performance for both track and street use. Experience the perfect blend of original design and aggressive performance. Shop our GSC Power Division range for original components that transform your vehicleís dynamics.

Empower Your JDM Engine With GSC Power Division Components

GSC P-D Hyundai G4KF Theta 4B11T Chrome Polished Exhaust Valve - 29mm Head (STD) - ONE

GSC P-D Mitsubishi 4B11T 21-4N Chrome Polished Intake Valve - 36mm Head (+1mm) - Single

GSC P-D Mitsubishi 4B11T 23-8N Chrome Polished Exhaust Valve - 30mm Head (+1mm) - Single

GSC P-D Mitsubishi 4B11T 21-4N Chrome Polished Intake Valve - 35mm Head (STD) - Single

GSC P-D Mitsubishi 4B11T 23-8N Chrome Polished Exhaust Valve - 29mm Head (STD) - Single

GSC P-D 4G63T Evo1-9/DSM 90-98 Chrome Polished Super Alloy Exhaust Valve - 31.5mm Head(+1mm) -SET 8

GSC P-D 4G63T Evo1-9/DSM 90-98 Chrome Polished Super Alloy Exhaust Valve - 30.5mm Head(STD) - SET 8

GSC P-D 4G63T Evo 1-9 / 90-98 DSM Chrome Polished Intake Valve - 35mm Head (+1mm) - SET 8

GSC P-D 4G63T Evo 1-9 / 90-98 DSM Chrome Polished Exhaust Valve - 31.5mm Head (+1mm) - SET 8

GSC P-D Mitsubishi Evo 9 4G63T 34mm Dia (STD) Chrome Polished Intake Valve - Set of 8

GSC P-D 4G63T Evo 1-9 / 90-98 DSM Chrome Polished Exhaust Valve - 30.5mm Head (STD) - SET 8

GSC P-D Nissan VQ35DE Viton 5.5mm Valve Stem Seal Set

GSC P-D Mitsubishi Evo X 4B11T Valve Stem Seal Set (Set of 16)

GSC P-D 4G63T Valve Seat OEM Replacement (Set of 16)

GSC P-D Mitsubishi 4G63T Evo 1-9 / 90-98 DSM Valve Keeper (Set Set of 32)

GSC P-D 4G63T Evo 1-9 / 90-98 DSM Viton 6.6mm Valve Stem Seal Set

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