Gain horsepower and torque through displacement using factory 4G63 engine block! Tomioka Racing 2.3 Liter Premium Stroker Kit for 4G63 series engine is built with the quality features and the latest technology in coating options to ensure the dependability that comes from every TR product. TR uses competition grade components from forged 2618 aluminum pistons, forged 4340 rods, and billet crankshaft chosen specifically to offer the durability to handle high horsepower demands. When coupled with our competition series bearings it makes TR Stroker Kit is the ultimate option in 4G63 engine upgrades!