JE Pistons Dodge SRT4 Ultra Series Set of 4 Pistons Inv Dome/Dish 3.484 Bore 1.432 CD 0.866 Dia

If you're building a high-horsepower Dodge SRT4 engine, especially one that will see significant boost, you need pistons that can handle the extreme cylinder pressures. JE Pistons' Ultra Series are designed precisely for these demanding applications. They're not just strong; they're packed with custom-level features that make a real difference when you're pushing the limits.

What sets these Ultra Series pistons apart is JE's proprietary Aligned Grain Flow forging technology. This process maximizes the material's tensile strength, giving the pistons the backbone needed for high-boost environments. You also get a thermal barrier crown coating, which is a ceramic-based material that reflects heat back into the combustion chamber. This helps keep piston crown temperatures down and can even improve how efficiently exhaust gases are scavenged. For reduced friction and wear on the skirts and cylinder walls, there's a durable skirt coating, which also helps quiet things down, especially during a cold start. Plus, lateral gas ports are included to help maintain a solid seal on the top compression ring, even at high RPMs and under heavy boost.

These pistons are built for serious performance, and every feature is optimized for high-horsepower racing engines. They come with high-strength wrist pins from Trend Performance, designed to handle the rigors of power-adder builds. Everything is made 100% in the USA, ensuring a well-built product you can rely on. Keep in mind these are not CARB approved and cannot be shipped to California.