JE Pistons Ultra Series Honda K20A 87mm Bore 10.0:1 CR Set of 4 Pistons

If you're building a high-performance Honda K20A engine, JE Pistons' Ultra Series forged pistons are a solid choice. This set is specifically designed for the K20A engine, with an 87mm bore and a 10.0:1 compression ratio, making them ideal for builds that plan to run significant boost or high cylinder pressures. JE Pistons are well-known for their strength and advanced features, and this Ultra Series is their top-shelf offering for demanding applications.

What sets these pistons apart is JE's proprietary Aligned Grain Flow forging technology. This process maximizes the material's tensile strength, which is crucial for handling the extreme forces found in boosted engines. They also come with custom-level features right out of the box. The thermal barrier crown coating helps reflect heat, keeping piston crown temperatures down and improving how efficiently exhaust gases are scavenged. For reduced friction and wear on the cylinder walls and piston skirts, a skirt coating is applied, which also helps quiet down operation, especially when the engine is cold. To ensure proper lubrication under high stress, these pistons feature enhanced pin oiling, keeping the wrist pin, pin bores, and connecting rod small end well-lubricated. Lateral gas ports are included to help maintain a strong ring seal, even at high RPMs and under heavy boost, which is key for consistent power production.

Every component in this kit, including the high-strength wrist pins made by Trend Performance, is manufactured in the USA. These pistons are designed for serious power, with every feature optimized for high-horsepower racing engines. Please note that this kit is not CARB approved and cannot be shipped to California.