JE Pistons SUB STI EJ257 99.5mm Bore CR 9.5 KIT Set of 4 Pistons

The JE Pistons SUB STI EJ257 99.5mm Bore CR 9.5 KIT Set of 4 Pistons are high-performance forged racing pistons designed to enhance engine durability and power. Built with over 75 years of expertise, JE Pistons are engineered, forged, and machined entirely in the USA to meet the demands of racing and high-performance applications. These pistons are specifically crafted for each engine to deliver an optimal balance of strength and performance, making them suitable for competitive motorsports and demanding driving conditions. Their premium construction ensures resistance to heat and stress, providing consistent performance from drift tracks to drag strips.

Designed for Subaru models equipped with the EJ257 engine, these pistons are ideal for engine rebuilds and performance upgrades. The 99.5mm bore size and 9.5:1 compression ratio make them suitable for turbocharged applications, offering increased power and reliability. They serve as direct replacements for stock pistons in Subaru WRX STI models and are intended for use in high-performance street or track environments. The kit includes four pistons, ready for installation in compatible EJ257 engines, ensuring a precise fit and optimal performance for racing or spirited driving.