JE Pistons Ultra Series Nissan SR20DET 86.5mm Bore 10.0:1 CR Set of 4 Pistons

JE Pistons is well-known for making strong internal engine components, and their Ultra Series pistons are a prime example. If you're building a high-performance Nissan SR20DET engine, especially one that will see significant boost, these pistons are designed to handle the extreme cylinder pressures that come with it. They are a set of four, with a bore size of 86.5mm and a compression ratio of 10.0:1, making them a solid choice for many performance builds.

What sets these Ultra Series pistons apart is JE's proprietary Aligned Grain Flow forging technology. This process maximizes the material's tensile strength, which is crucial for withstanding the intense forces in a boosted engine. You'll also find custom-level features like a thermal barrier crown coating that reflects heat back into the combustion chamber, helping to keep piston temperatures down and improve exhaust scavenging. The included high-strength wrist pins, made by Trend Performance, are built tough for demanding applications. Plus, the skirt coating helps reduce friction and wear on the cylinder walls, leading to a quieter engine, especially when cold, and improved lubrication to the pin and connecting rod.

These pistons also feature lateral gas ports, which are designed to help maintain a strong seal on the top compression ring, even at high RPMs and under significant boost. Every aspect of the Ultra Series pistons is optimized for high-horsepower engines, and they are proudly made 100% in the USA. Please note that these pistons are not CARB approved and cannot be shipped to California.