HKS PISTON KIT SR20DET 2.21 (Repair Kit for 21004-AN001)

Forged from high-strength aluminum alloy, these HKS pistons are built to handle the increased demands of a performance SR20DET engine. This kit is specifically designed as a repair set for the HKS 21004-AN001 crankshaft, meaning it's intended to work seamlessly with that particular component for a complete engine build.

The 2.21 designation refers to the bore size, indicating these pistons are for an engine that has been bored out to accommodate a larger displacement. This is a common modification for SR20DET owners looking to extract more power and torque from their engines. The forged construction offers superior durability and resistance to detonation compared to cast pistons, making them a solid choice for high-performance applications where reliability is paramount.

When rebuilding your SR20DET engine with these pistons, ensure you follow the manufacturer's recommended clearances and lubrication procedures. This kit is designed to be a direct replacement for the pistons in the HKS 21004-AN001 crankshaft assembly, simplifying the installation process for experienced engine builders. Remember, this kit is not CARB approved and cannot be shipped to California.