Supertech Honda K24 w/K20 Head 87.5mm Bore +4.0cc Dome 12.5:1 CR Pistons - Set of 4 (Excl Rings)

If you're rebuilding the top end of your Honda K24 engine, especially when using a K20 cylinder head, a set of performance pistons like these from Supertech is a critical component. These pistons are designed to handle increased cylinder pressures and temperatures, making them a solid choice for builds aiming for more power and durability. They feature a specific dome volume and compression ratio tailored for optimal performance with the K20 head configuration.

These Supertech pistons are forged from high-strength aluminum alloy, a process that creates a denser, more robust piston compared to cast alternatives. This forged construction is essential for withstanding the higher stresses found in performance or modified engines. The 87.5mm bore size is a common upgrade for K24 engines, allowing for a slight increase in displacement. The +4.0cc dome shape is carefully calculated to achieve a 12.5:1 compression ratio when paired with the K20 cylinder head, which is a popular target for naturally aspirated builds seeking improved throttle response and power output. It's important to note that these pistons are sold as a set of four and do not include piston rings, which will need to be purchased separately.

When installing these pistons, ensure you follow the manufacturer's recommended clearances and lubrication procedures. Proper ring gap setting and cylinder wall preparation are crucial for the longevity and performance of your engine build. Because these pistons are not CARB approved, they cannot be shipped to California. Always consult your engine builder or a trusted mechanic for specific installation guidance and to confirm compatibility with your exact engine setup and intended use.