JE Pistons 06 Civic SI K20A2/A3 Bore (90mm) Size (+4.0) CR (9.0:1) Asymmetrical FSR Piston Set of 4

This piston set from JE Pistons includes four forged pistons, high-quality wrist pins, locks, and JE Pro Seal premium piston rings. These pistons are built for the K20A2 and K20A3 engines found in many performance applications, specifically designed for a 90mm bore with a 9.0:1 compression ratio. JE Pistons has over 75 years of experience in creating durable, high-performance pistons for racing and sport compact vehicles.

Each piston features JE's proprietary Forged Side Relief (FSR) design. This advanced forging minimizes friction and power loss by using a reduced skirt width and a shorter wrist pin, which also saves weight. Depending on the specific application, these pistons may also include an accumulator groove to help reduce combustion gas pressure, improving ring seal and maintaining consistent power. A skirt coating, also application-dependent, further reduces friction and wear on the piston skirts and cylinder walls, contributing to quieter operation.

Forged in the USA from 2618 aluminum, these pistons offer the high tensile strength necessary for demanding performance builds. They are engineered specifically for the K-series engine to optimize performance and durability. Please note that this kit is not CARB approved and cannot be shipped to California. It is designed for off-road use and may not be legal for sale or use in California.