JE Pistons Ultra Series Nissan SR20DET 86mm 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 of that expertise. 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 feature a precise 86mm bore and a 10.0:1 compression ratio, making them a solid choice for builds aiming for serious power.

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 these pistons the toughness needed for demanding applications. You'll also find custom-level features like a thermal barrier crown coating, which helps reflect heat back into the combustion chamber to keep piston crown temperatures down. The skirts are coated to reduce friction and wear against the cylinder walls, which also helps quiet things down, especially during a cold start. Plus, they include lateral gas ports to help maintain a strong ring seal even at high RPMs and under heavy boost, and optimized pin oiling ensures the wrist pins stay well-lubricated.

This set includes four pistons, each made from 2618 aluminum with a flat-top design. They come with high-strength wrist pins manufactured by Trend Performance. Remember, these pistons are made 100% in the USA, reflecting JE Pistons' commitment to domestic manufacturing and quality control. Please note that these are not CARB approved and cannot be shipped to California.