JE Pistons Ultra Series Honda K20C 86.5mm Bore 10.0:1 CR Set of 4 Pistons

Starting with JE Pistons' proprietary Aligned Grain Flow forging technology, these Ultra Series pistons are built to handle the extreme cylinder pressures found in high-boost, power-adder engine builds. This advanced forging process maximizes tensile strength, giving you a solid foundation for your performance Honda K20C engine. Each piston in this set is precisely machined to an 86.5mm bore with a 10.0:1 compression ratio, designed to work with your specific engine configuration.

Beyond the strong forging, JE has equipped these pistons with custom-level features typically found only in bespoke race engines. A thermal barrier crown coating reflects heat back into the combustion chamber, helping to keep piston crown temperatures down and improving exhaust gas scavenging. The piston skirts are treated with a friction-reducing coating that also helps quiet down operation, especially during cold starts, while minimizing wear on both the skirts and cylinder walls. Enhanced pin oiling features ensure the high-strength Trend Performance wrist pins stay well-lubricated, reducing heat and friction in this critical area.

Lateral gas ports are integrated into the piston design to help maintain a strong ring seal, even at high RPMs and under significant boost pressure, which is crucial for consistent power production. These pistons are made 100% in the USA, ensuring a high level of manufacturing quality. Please note that these pistons are not CARB approved and cannot be shipped to California.