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JE Pistons SUB WRX EJ205 79mm STR 92.5mm Bore CR 8.5 KIT Set of 4 Pistons

As the leader in forged racing pistons, JE Pistons has applied over 75 years of experience to its wide range of premium forged pistons for European, import and sport compact applications. Engineered, forged and machined 100% in the USA, JE Pistons are designed for each specific engine and racing application to provide the ultimate combination of durability and performance. From drift track to drag strip, JE Pistons? performance is proven in victory lane time and time again. Equip your engine with the best in forged pistons. JE, Subaru, EJ Series, 3.642 in. Bore, 8.50:1, Inverted Dome/Dish, 4 Cyl. Piston Kit These pistons utilize our dedicated Forged Side Relief (FSR) forging that was specifically designed to increase strength.
  • Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss with reduced skirt width and saves additional weight with a shorter wrist pin
  • Accumulator groove (depending on application) helps reduce pressure from combustion gases, reducing ring fluttering and improving ring seal for consistent power
  • Skirt coating (depending on application) reduces friction and wear on piston skirts and cylinder walls while simultaneously reducing operating noise
  • Forged in the USA using 2618 aluminum, yielding high tensile strength needed for high-demand performance applications
  • Designed specifically for each engine and use application to provide optimized performance durability
  • Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
  • Made 100% in the USA

Enhance your Subaru WRX EJ205 engine with the JE Pistons JEP314447 set, designed for optimal performance and durability in high-demand applications. Crafted from high-strength 2618 aluminum, these forged pistons are engineered to withstand the rigors of racing and spirited driving. Each piston is precisely machined and forged in the USA, ensuring consistent quality and performance. The set includes four pistons, wrist pins, locks, and JE Pro Seal premium piston rings, providing a comprehensive upgrade for your engine.
JE Pistons utilize their proprietary Forged Side Relief (FSR) forging design, which minimizes friction and power loss through reduced skirt width and a shorter wrist pin. The inverted dome/dish design helps optimize compression ratios while maintaining reliable sealing. An accumulator groove, depending on your specific application, helps reduce pressure from combustion gases, decreasing ring fluttering and improving ring seal for more consistent power output.
Additional features include a skirt coating that reduces friction and wear on piston skirts and cylinder walls, as well as operating noise. These pistons are specifically tailored for the Subaru WRX EJ205 engine with a 79mm piston diameter and a 92.5mm bore, offering an ideal balance of strength and performance. Designed for racing and high-performance street use, they are not carb-legal but are built to deliver maximum power and durability. Made entirely in the USA, this piston kit is a reliable choice for enthusiasts seeking to upgrade their engine with premium forged components that meet demanding specifications.

Features:

  • Proprietary Forged Side Relief (FSR) forging design minimizes friction and power loss
  • Accumulator groove reduces pressure from combustion gases for consistent power
  • Skirt coating decreases friction, wear, and operating noise
  • Constructed from high-tensile 2618 aluminum for high-demand applications
  • Engineered specifically for Subaru WRX EJ205 with a 79mm piston diameter and 92.5mm bore
  • Includes high-quality wrist pins, locks, and JE Pro Seal premium piston rings
  • Made 100% in the USA, ensuring quality and performance