HKS PISTON KIT 4B11 2.2L

This is the HKS 4B11 2.2L forged piston kit, part number 21003-AM004. It's designed for builders looking to significantly upgrade the performance and durability of their 4B11 engine, specifically when increasing displacement to 2.2 liters. Forged pistons are a critical component when you're pushing an engine beyond its stock limits, whether that's with forced induction or higher compression ratios.

HKS has a long history of producing well-built performance engine components, and this piston kit is no exception. These pistons are forged from high-strength aluminum alloy, which gives them a solid foundation to handle increased cylinder pressures and temperatures that come with a performance build. The kit includes the pistons themselves, along with wrist pins and locks, ready for installation by a qualified engine builder. The 2.2L displacement increase is achieved through a combination of bore and stroke modifications, and these pistons are specifically designed to work within that configuration, ensuring proper combustion chamber volume and compression ratio.

When undertaking a performance engine build of this magnitude, it's essential to ensure all supporting components are up to the task. This includes the crankshaft, connecting rods, and the engine block itself. Proper balancing and machining are also crucial for longevity and optimal performance. Please note that this kit is not CARB approved and cannot be shipped to California. Always consult with your engine builder or refer to HKS's technical documentation for specific installation procedures and recommended clearances.