JE Pistons SUB STI EJ257 99.5mm Bore CR 8.5 Kit – Forged Performance Piston Set for Subaru Impreza

Description

Upgrade your Subaru Impreza with the JE Pistons SUB STI EJ257 99.5mm bore CR 8.5 kit, engineered for high-performance applications. Crafted with proprietary forged side relief (FSR) design, these pistons minimize friction and power loss by reducing skirt width and incorporating a shorter wrist pin, leading to improved efficiency and durability. The accumulator groove (depending on application) helps reduce pressure from combustion gases, which improves ring seal and provides consistent power output. Skirt coating, applied depending on the application, reduces friction and wear on piston skirts and cylinder walls while also decreasing operating noise, ensuring smoother engine operation and extended component life.

JE Pistons are forged in the USA from high-strength 2618 aluminum, specifically designed to withstand the demands of high-performance racing and daily driving. Each piston kit includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings, providing a comprehensive upgrade for your engine. Designed for precise fitment and optimized performance, this set enhances durability and power across various Subaru Impreza models from 2004 to 2007, making it a reliable choice for enthusiasts seeking to maximize engine output.Built for racing, drifting, or spirited driving, these forged pistons are proven in victory lane and are a trusted component for those who demand excellence. As a part of JE Pistons’ extensive line of forged engine components, this kit offers an ideal balance of strength, performance, and longevity. Whether you’re building a high-horsepower street engine or a dedicated race car, the SUB STI EJ257 piston set provides the quality and performance you need to push your vehicle to the next level.

Features:

• Proprietary Forged Side Relief (FSR) forging design reduces friction and saves weight with a shorter wrist pin

• Accumulator groove helps reduce pressure from combustion gases, improving ring seal and power consistency

• Skirt coating minimizes friction, wear, and noise for smoother engine operation

• Forged in the USA from high tensile strength 2618 aluminum for demanding performance

• Engineered specifically for Subaru Impreza models from 2004 to 2007 for optimized fit and durability

• Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings for complete assembly

Fitment:
Subaru Forester Sports 2.5 XT 2008
Subaru Impreza WRX 2002
Subaru Impreza WRX 2003
Subaru Impreza WRX 2004
Subaru Impreza WRX 2005
Subaru Impreza WRX 2006
Subaru Impreza WRX 2007
Subaru Impreza WRX 2008
Subaru Impreza WRX 2009
Subaru Impreza WRX 2010
Subaru Impreza WRX 2011
Subaru Impreza WRX 2012
Subaru Impreza WRX Limited 2006
Subaru Impreza WRX Limited 2007
Subaru Impreza WRX Limited 2010
Subaru Impreza WRX Limited 2011
Subaru Impreza WRX Limited 2012
Subaru Impreza WRX Premium 2009
Subaru Impreza WRX Premium 2010
Subaru Impreza WRX Premium 2011
Subaru Impreza WRX Premium 2012
Subaru Impreza WRX STI 2004
Subaru Impreza WRX STI 2005
Subaru Impreza WRX STI 2006
Subaru Impreza WRX STI 2007
Subaru Impreza WRX STI 2008
Subaru Impreza WRX STI 2009
Subaru Impreza WRX STI 2010
Subaru Impreza WRX STI 2011
Subaru Impreza WRX STI 2012
Subaru Impreza WRX STI Limited 2007
Subaru Impreza WRX STI Limited 2011
Subaru Impreza WRX STI Limited 2012
Subaru Impreza WRX STI Special Edition 2010
Subaru Impreza WRX TR 2006
Subaru Impreza WRX TR 2007
Subaru Legacy 2.5GT 2010
Subaru Legacy 2.5GT 2011