JE Pistons SUB STI EJ257 99.75mm Bore CR 9.5 KIT Set of 4 Pistons

The JE Pistons SUB STI EJ257 99.75mm Bore CR 9.5 KIT Set of 4 Pistons is a high-performance forged piston set designed for Subaru EJ257 engines. Built with over 75 years of expertise, JE Pistons offers a product engineered, forged, and machined entirely in the USA to ensure maximum durability and performance. These pistons are specifically crafted for racing and high-stress applications, providing an optimal balance of strength and reliability. Their design enhances engine efficiency and power output, making them ideal for motorsport and demanding driving conditions. The set includes four pistons, each engineered to meet the precise specifications required for the EJ257 engine, ensuring a perfect fit and consistent performance.

Suitable for Subaru models equipped with the EJ257 engine, typically found in WRX STI vehicles, this piston kit is intended for performance upgrades and racing applications. It is a direct replacement set, designed to fit 99.75mm bore engines with a compression ratio of 9.5. The kit is ideal for enthusiasts seeking to improve engine strength, boost power, and enhance durability in track or street performance scenarios. Installation involves replacing existing pistons with these forged units, ensuring a reliable upgrade for high-performance builds. This set is perfect for those building or rebuilding Subaru EJ257 engines for racing, tuning, or serious street use.