HKS PISTON KIT 4G63 2.3L 85.5

If you're rebuilding the engine in your 4G63-powered vehicle and aiming for more power and durability, a set of forged pistons is a critical component. This HKS piston kit is designed to handle increased cylinder pressures and temperatures that come with performance modifications, allowing you to push your engine further than stock internals would allow. The 85.5mm bore size is a common upgrade for increasing displacement to 2.3 liters, providing a noticeable bump in torque and horsepower.

HKS has a long history in performance tuning, and these pistons reflect that experience. They are forged from high-strength aluminum alloy, a material chosen for its excellent strength-to-weight ratio and resistance to detonation. This forging process creates a denser, more robust piston structure compared to cast pistons, making them ideal for high-performance applications. The kit includes the pistons, rings, wrist pins, and locks, so you have the essential components needed for installation. This comprehensive package simplifies the rebuilding process, ensuring you have matched parts from a reputable manufacturer.

When installing these pistons, it's important to follow the manufacturer's recommended clearances and lubrication procedures to ensure proper break-in and long-term reliability. Given the significant performance increase these pistons enable, it's also wise to consider other supporting modifications such as upgraded connecting rods, a performance camshaft, and an engine management system to take full advantage of the enhanced capability. Please note that this kit is not CARB approved and cannot be shipped to California.