JE Pistons SUB STI EJ257 99.75mm Bore Forged Piston Kit – High-Performance 4-Cylinder Engine Replacement for Subaru Impreza

Description

Upgrade your Subaru Impreza with the JE Pistons SUB STI EJ257 99.75mm bore forged piston kit, designed for optimal performance and durability in high-demand applications. Crafted from high-quality 2618 aluminum, these pistons are forged and machined entirely in the USA, ensuring superior strength and consistency for racing, drifting, or spirited drives. The kit includes four pistons, high-quality wrist pins, locks, and JE Pro Seal premium piston rings, providing a comprehensive solution for engine rebuilds or performance upgrades.
JE Pistons has over 75 years of experience specializing in forged racing pistons, and this kit exemplifies their commitment to engineering excellence. The proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss by reducing skirt width and saving weight with a shorter wrist pin. An accumulator groove helps reduce pressure from combustion gases, improving ring seal and maintaining consistent power output. Additionally, a skirt coating enhances wear resistance and reduces operating noise, prolonging piston life and ensuring smooth engine operation.
Each piston is specifically engineered for Subaru EJ series engines, delivering an optimized balance of performance, durability, and efficiency. Designed to withstand high-performance demands, these pistons are suitable for applications from daily driving to competitive racing. The kit is not CARB-legal, and proper acknowledgment of this is required before installation. Made in the USA, these pistons meet high-quality standards and are built to last, making them an essential upgrade for serious Subaru enthusiasts seeking to maximize their engine’s potential.

Features:

• Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss

• Accumulator groove reduces pressure from combustion gases, improving ring seal

• Skirt coating reduces friction, wear, and operating noise

• Forged in the USA from high-strength 2618 aluminum for demanding applications

• Engineered specifically for Subaru EJ series engines to optimize performance and durability

• Includes high-quality wrist pins, locks, and JE Pro Seal piston rings for a complete rebuild kit

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