JE Pistons Ultra Series GM Gen V LT4 4.07in Bore/3.622in Stroke Set of 8 Pistons

JE Pistons' Ultra Series forged pistons are built for the extreme demands of high-horsepower, power-adder GM Gen V LT4 engines. These aren't your average off-the-shelf pistons; they're packed with custom-level features designed to handle the intense cylinder pressures found in boosted or nitrous-fed V8 builds. Each set is made 100% in the USA, ensuring top-notch manufacturing for your performance engine.

What sets these Ultra Series pistons apart is JE's proprietary Aligned Grain Flow forging technology. This advanced process maximizes tensile strength, giving these pistons the fortitude to withstand the stresses of serious performance applications. You'll also find a thermal barrier crown coating, which is a ceramic-based material that reflects heat back into the combustion chamber. This helps reduce piston crown temperatures and can improve how efficiently exhaust gases are scavenged. For reduced friction and wear on the skirts and cylinder walls, a durable skirt coating is applied, which also helps quiet down the engine, especially during cold starts. To keep things properly lubricated under extreme conditions, these pistons feature optimized pin oiling, and lateral gas ports are included to help maintain a strong ring seal even at high RPMs and under significant boost.

This set is specifically designed for a 4.070-inch bore and includes high-strength wrist pins from Trend Performance, known for their durability in high-performance builds. If you're pushing the limits of your LT4 engine and need pistons that can keep up, this JE Pistons Ultra Series set is a solid option.