JE Pistons SUB STI EJ257 Block 100mm Bore CR 8.5 (Right Side) Single Piston

If you're rebuilding the engine in your Subaru EJ257, especially for performance applications, a strong piston is key. This single piston from JE Pistons is built to handle the demands of a performance engine, offering improved durability and optimized power output. It's designed specifically for the EJ257 block, ensuring it works well with your engine's setup.

JE Pistons uses 2618 aluminum for these pistons, which is known for its high tensile strength, making it well-suited for high-stress environments. They also feature a proprietary Forged Side Relief (FSR) design that helps minimize friction and power loss by reducing skirt width. Some applications also include a skirt coating to further cut down on friction and wear, leading to a quieter and more durable engine. This piston also includes a 1.209" compression distance and a 0.905" wrist pin, and comes with high-quality wrist pins, locks, and JE Pro Seal premium piston rings.

This is a single piston designed for the right side of the block, with a 100mm bore and a compression ratio of 8.5:1. Remember that this part is not CARB approved and cannot be shipped to California.