JE Pistons SUB STI EJ257 Block w/ EJ20 Head 99.75mm Bore CR 8.5 KIT Set of 4 Pistons

The JE Pistons SUB STI EJ257 Block w/ EJ20 Head kit is a set of forged racing pistons designed to enhance engine performance and durability. Crafted with over 75 years of expertise, JE Pistons applies advanced engineering, forging, and machining techniques to produce high-quality components for sport compact and import applications. These pistons are engineered and manufactured entirely in the USA, ensuring precise fitment and consistent quality. They are optimized for racing and high-performance use, providing a robust combination of strength and reliability. The kit includes four pistons with a 99.75mm bore and an 8.5 compression ratio, making it suitable for demanding motorsport environments from drifting to drag racing.

This piston kit is compatible with Subaru models equipped with EJ257 blocks and EJ20 heads, typically found in performance-oriented Subaru WRX STI models. It is intended for use in engines requiring a direct replacement or upgrade for increased power output and durability. The kit is suitable for high-performance builds, track use, or racing applications, offering a reliable upgrade for engines with similar specifications. Proper installation ensures optimal performance, and these pistons serve as a premium component for enthusiasts seeking to maximize their engine’s potential.