JE Pistons Ultra Series GM Gen V LT1 4.075in Bore/3.622in Stroke Set of 8 Pistons

JE Pistons' Ultra Series pistons are built with a proprietary Aligned Grain Flow forging process, a unique in-house technology that maximizes tensile strength. This is crucial for handling the extreme cylinder pressures found in high-performance engine builds, especially those using power adders like turbochargers or nitrous oxide. These pistons are designed to be a robust solution for your GM Gen V LT1 engine, offering a 4.075-inch bore and a 3.622-inch stroke.

Beyond their strong foundation, these Ultra Series pistons come equipped with custom-level features typically found only in bespoke builds. A thermal barrier crown coating, which is ceramic-based, helps reflect heat back into the combustion chamber, reducing piston crown temperatures and improving the efficiency of exhaust gas scavenging. The piston skirts are treated with a coating that reduces friction and wear against the cylinder walls, which also helps to quiet down operating noise, particularly during cold starts. Lateral gas ports are incorporated to help maintain a strong ring seal even under high RPM and boost conditions, ensuring consistent power delivery.

Included with these pistons are high-strength, thick-wall wrist pins manufactured by Trend Performance in the USA, built to withstand the rigors of high-horsepower applications. Optimized pin oiling features are also integrated to ensure the pin, pin bores, and small end of the connecting rod remain well-lubricated, further reducing heat, friction, and wear. Every aspect of the Ultra Series pistons is optimized for high-horsepower racing engines, and they are proudly made 100% in the USA.