Manley Performance

Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257

Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
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Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257
Manley Performance

Manley Extreme Duty Piston Set - 99.75mm +.25mm Bore 8.5:1 Dish — Fits 2004+ Subaru WRX/STI EH257

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SKU: MAN632202CE-4
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About Manley Performance Manley Performance engineers high-quality automotive parts and ...Read More

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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
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Product Details

Product Description
Part Numbers
Sizing & Fit

About Manley Performance

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

Manley Extreme Duty Forged Piston Set for 2004+ Subaru WRX/STI (EH257) - Oversized

Unleash the full potential of your Subaru WRX/STI with this Manley Extreme Duty forged piston set. Specifically designed for the 2004 and newer WRX/STI models featuring the EH257 engine, this set includes pistons with an oversized 99.75mm bore (+.25mm) and an 8.5:1 compression ratio, complete with a dish top for enhanced performance tuning.

Built for Extreme Performance

  • 2618 Alloy Forgings: Constructed from premium domestic 2618 alloy, these pistons provide exceptional strength and durability to handle extreme engine loads.
  • Chrome Moly Wrist Pins: Standard with high-quality Chrome Moly wrist pins. Upgrades to 9310 and Turbo Tuff/DLC alloys are available for even greater resilience.
  • Optimized Ring Seal: Features precisely machined ring lands and grooves, ensuring superior ring seal for maximum power and efficiency.
  • Performance Profiles: Cam and barrel (skirt) profiles are engineered to generate significant horsepower while maintaining gentle contact with cylinder walls.
  • Precision Manufacturing: Manley's unique fixturing process allows for simultaneous skirt turning and ring groove machining, guaranteeing perfect squareness and ultimate reliability.

This set of extreme duty forged pistons is the ideal choice for Subaru WRX/STI owners looking to build a high-performance engine capable of withstanding rigorous use.

Find your Manley Performance piston set at GGCRACING.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Manley Performance

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

Manley Extreme Duty Forged Piston Set for 2004+ Subaru WRX/STI (EH257) - Oversized

Unleash the full potential of your Subaru WRX/STI with this Manley Extreme Duty forged piston set. Specifically designed for the 2004 and newer WRX/STI models featuring the EH257 engine, this set includes pistons with an oversized 99.75mm bore (+.25mm) and an 8.5:1 compression ratio, complete with a dish top for enhanced performance tuning.

Built for Extreme Performance

  • 2618 Alloy Forgings: Constructed from premium domestic 2618 alloy, these pistons provide exceptional strength and durability to handle extreme engine loads.
  • Chrome Moly Wrist Pins: Standard with high-quality Chrome Moly wrist pins. Upgrades to 9310 and Turbo Tuff/DLC alloys are available for even greater resilience.
  • Optimized Ring Seal: Features precisely machined ring lands and grooves, ensuring superior ring seal for maximum power and efficiency.
  • Performance Profiles: Cam and barrel (skirt) profiles are engineered to generate significant horsepower while maintaining gentle contact with cylinder walls.
  • Precision Manufacturing: Manley's unique fixturing process allows for simultaneous skirt turning and ring groove machining, guaranteeing perfect squareness and ultimate reliability.

This set of extreme duty forged pistons is the ideal choice for Subaru WRX/STI owners looking to build a high-performance engine capable of withstanding rigorous use.

Find your Manley Performance piston set at GGCRACING.

Product Details

Product Description

About Manley Performance

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

Manley Extreme Duty Forged Piston Set for 2004+ Subaru WRX/STI (EH257) - Oversized

Unleash the full potential of your Subaru WRX/STI with this Manley Extreme Duty forged piston set. Specifically designed for the 2004 and newer WRX/STI models featuring the EH257 engine, this set includes pistons with an oversized 99.75mm bore (+.25mm) and an 8.5:1 compression ratio, complete with a dish top for enhanced performance tuning.

Built for Extreme Performance

  • 2618 Alloy Forgings: Constructed from premium domestic 2618 alloy, these pistons provide exceptional strength and durability to handle extreme engine loads.
  • Chrome Moly Wrist Pins: Standard with high-quality Chrome Moly wrist pins. Upgrades to 9310 and Turbo Tuff/DLC alloys are available for even greater resilience.
  • Optimized Ring Seal: Features precisely machined ring lands and grooves, ensuring superior ring seal for maximum power and efficiency.
  • Performance Profiles: Cam and barrel (skirt) profiles are engineered to generate significant horsepower while maintaining gentle contact with cylinder walls.
  • Precision Manufacturing: Manley's unique fixturing process allows for simultaneous skirt turning and ring groove machining, guaranteeing perfect squareness and ultimate reliability.

This set of extreme duty forged pistons is the ideal choice for Subaru WRX/STI owners looking to build a high-performance engine capable of withstanding rigorous use.

Find your Manley Performance piston set at GGCRACING.

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