JE Pistons SUB EJ257 83mm STR 99.75mm Bore CR 8.5 Kit Forged Piston Set — Fits 2002-2012 Subaru Impreza WRX/STI

SKU: JEP296352
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About JE Pistons

JE Pistons engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full JE Pistons lineup with fast shipping and expert fitment support — order with confidence.

JE Pistons Forged Piston Kit for Subaru EJ257 (99.75mm Bore, CR 8.5, 83mm Stroke)

Unleash the full potential of your Subaru EJ257 engine with this high-performance forged piston kit from JE Pistons. Featuring a 99.75mm bore, a compression ratio of 8.5:1, and designed for an 83mm stroke, these pistons are precision-crafted in the USA from robust 2618 aluminum to handle extreme performance demands.

Key Features and Benefits:

  • High-Performance Material: Forged from 2618 aluminum, offering superior strength and resistance to high temperatures and pressures.
  • Engineered for Performance: Specifically designed for the Subaru EJ257 engine with an 83mm stroke to optimize power and reliability.
  • Optimized Bore Size: The 99.75mm bore provides a precise fit for enhanced engine performance.
  • Friction Reduction: Utilizes JE Pistons' advanced Forged Side Relief (FSR) design to minimize friction and parasitic power loss, while also reducing overall weight.
  • Durability Features: Includes skirt coating (application dependent) for reduced friction and wear, and an accumulator groove (application dependent) for improved ring seal and consistent power output.
  • Complete Kit: Supplied with high-quality wrist pins, locks, and JE Pro Seal premium piston rings for a comprehensive solution.
  • USA Made: Ensures top-tier manufacturing quality and reliability.

This JE Pistons kit is the ultimate upgrade for Subaru WRX and STI owners seeking maximum power and engine longevity. Trust in JE Pistons' expertise for your high-performance build. Get the best engine components at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008 Subaru Forester Sports 2.5 XT
2002-2012 Subaru Impreza WRX
2004-2012 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX Limited
2006-2007 Subaru Impreza WRX TR
2007 Subaru Impreza WRX STI Limited
2009-2012 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2012 Subaru Impreza WRX Limited
2010-2011 Subaru Legacy 2.5GT

Product Details

Product Description
Part Numbers
Sizing & Fit

About JE Pistons

JE Pistons engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full JE Pistons lineup with fast shipping and expert fitment support — order with confidence.

JE Pistons Forged Piston Kit for Subaru EJ257 (99.75mm Bore, CR 8.5, 83mm Stroke)

Unleash the full potential of your Subaru EJ257 engine with this high-performance forged piston kit from JE Pistons. Featuring a 99.75mm bore, a compression ratio of 8.5:1, and designed for an 83mm stroke, these pistons are precision-crafted in the USA from robust 2618 aluminum to handle extreme performance demands.

Key Features and Benefits:

  • High-Performance Material: Forged from 2618 aluminum, offering superior strength and resistance to high temperatures and pressures.
  • Engineered for Performance: Specifically designed for the Subaru EJ257 engine with an 83mm stroke to optimize power and reliability.
  • Optimized Bore Size: The 99.75mm bore provides a precise fit for enhanced engine performance.
  • Friction Reduction: Utilizes JE Pistons' advanced Forged Side Relief (FSR) design to minimize friction and parasitic power loss, while also reducing overall weight.
  • Durability Features: Includes skirt coating (application dependent) for reduced friction and wear, and an accumulator groove (application dependent) for improved ring seal and consistent power output.
  • Complete Kit: Supplied with high-quality wrist pins, locks, and JE Pro Seal premium piston rings for a comprehensive solution.
  • USA Made: Ensures top-tier manufacturing quality and reliability.

This JE Pistons kit is the ultimate upgrade for Subaru WRX and STI owners seeking maximum power and engine longevity. Trust in JE Pistons' expertise for your high-performance build. Get the best engine components at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008 Subaru Forester Sports 2.5 XT
2002-2012 Subaru Impreza WRX
2004-2012 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX Limited
2006-2007 Subaru Impreza WRX TR
2007 Subaru Impreza WRX STI Limited
2009-2012 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2012 Subaru Impreza WRX Limited
2010-2011 Subaru Legacy 2.5GT

Product Details

Product Description

About JE Pistons

JE Pistons engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full JE Pistons lineup with fast shipping and expert fitment support — order with confidence.

JE Pistons Forged Piston Kit for Subaru EJ257 (99.75mm Bore, CR 8.5, 83mm Stroke)

Unleash the full potential of your Subaru EJ257 engine with this high-performance forged piston kit from JE Pistons. Featuring a 99.75mm bore, a compression ratio of 8.5:1, and designed for an 83mm stroke, these pistons are precision-crafted in the USA from robust 2618 aluminum to handle extreme performance demands.

Key Features and Benefits:

  • High-Performance Material: Forged from 2618 aluminum, offering superior strength and resistance to high temperatures and pressures.
  • Engineered for Performance: Specifically designed for the Subaru EJ257 engine with an 83mm stroke to optimize power and reliability.
  • Optimized Bore Size: The 99.75mm bore provides a precise fit for enhanced engine performance.
  • Friction Reduction: Utilizes JE Pistons' advanced Forged Side Relief (FSR) design to minimize friction and parasitic power loss, while also reducing overall weight.
  • Durability Features: Includes skirt coating (application dependent) for reduced friction and wear, and an accumulator groove (application dependent) for improved ring seal and consistent power output.
  • Complete Kit: Supplied with high-quality wrist pins, locks, and JE Pro Seal premium piston rings for a comprehensive solution.
  • USA Made: Ensures top-tier manufacturing quality and reliability.

This JE Pistons kit is the ultimate upgrade for Subaru WRX and STI owners seeking maximum power and engine longevity. Trust in JE Pistons' expertise for your high-performance build. Get the best engine components at GGCRACING.

Vehicle Fitment

Years Make Model Trim
2008 Subaru Forester Sports 2.5 XT
2002-2012 Subaru Impreza WRX
2004-2012 Subaru Impreza WRX STI
2006-2007 Subaru Impreza WRX Limited
2006-2007 Subaru Impreza WRX TR
2007 Subaru Impreza WRX STI Limited
2009-2012 Subaru Impreza WRX Premium
2010 Subaru Impreza WRX STI Special Edition
2010-2012 Subaru Impreza WRX Limited
2010-2011 Subaru Legacy 2.5GT

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