JE Pistons Ultra Series Mitsubishi 4B11T 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 Mitsubishi 4B11T engine, especially one that will see significant boost, these pistons are designed to handle the extreme cylinder pressures you'll encounter. They are a set of four, each with an 86mm bore and a 10.0:1 compression ratio, making them a solid choice for a powerful build.

What sets these Ultra Series pistons apart is their proprietary Aligned Grain Flow forging technology. This in-house process maximizes the material's tensile strength, which is crucial for withstanding the intense forces in a boosted engine. You'll also find a thermal barrier crown coating that reflects heat, helping to keep piston crown temperatures down and improve exhaust gas scavenging. For reduced friction and wear on the cylinder walls and piston skirts, a skirt coating is applied, which also helps quiet down the engine, especially when it's cold. The pistons also feature lateral gas ports to help maintain a strong ring seal even at high RPMs and under heavy boost, ensuring consistent power delivery. These pistons are made 100% in the USA, including the high-strength, thick-wall wrist pins from Trend Performance.

This kit includes everything you need to get these advanced pistons installed, including the high-strength wrist pins. They are specifically designed for the demands of high-horsepower racing engines. Please note that these pistons are not CARB approved and cannot be shipped to California.