Manley Performance

Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257

Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
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Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257
Manley Performance

Manley 612001C-4 Forged Piston Set (99.55mm Bore) — Fits 2004+ Subaru WRX STi EJ257

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SKU: MAN612001C-4
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About Manley Performance Manley Performance engineers high-quality automotive parts and ...Read More

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$699.99 $760.03
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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.

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Manley Performance 612001C-4 Forged Piston Set for 2004+ Subaru WRX STi (EJ257)

Upgrade your 2004 and later Subaru WRX STi's EJ257 engine with the Manley Performance 612001C-4 forged piston set. This set is precision-engineered with a 99.55mm bore and an 8.5:1 compression ratio, offering a significant performance enhancement for enthusiasts seeking reliability and power.

Engineered for Performance:

  • Premium 2618 Alloy Forgings: Built using domestic 2618 alloy, these pistons provide exceptional strength to handle the rigors of high-performance driving.
  • Durable Chrome Moly Wrist Pins: Each set includes high-quality Chrome Moly wrist pins, ensuring robust operation and longevity.
  • Optimized Ring Seal: Features precisely machined ring lands and grooves that guarantee an enhanced ring seal, crucial for maximizing power and preventing blow-by.
  • Advanced Piston Profiles: The cam and barrel profiles are designed to generate substantial power while maintaining gentleness on cylinder walls, promoting engine health.
  • Superior Manufacturing: Manley's unique fixturing process ensures critical components like skirt and ring grooves are machined with ultimate squareness for perfect fitment and function.

This complete piston and ring set is ideal for engine rebuilds and performance upgrades on the EJ257 engine. Experience the difference that high-quality forged components make. Equip your Subaru WRX STi with Manley Performance parts from GGCRACING for unparalleled performance and durability.

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.

Watch in action

Manley Performance 612001C-4 Forged Piston Set for 2004+ Subaru WRX STi (EJ257)

Upgrade your 2004 and later Subaru WRX STi's EJ257 engine with the Manley Performance 612001C-4 forged piston set. This set is precision-engineered with a 99.55mm bore and an 8.5:1 compression ratio, offering a significant performance enhancement for enthusiasts seeking reliability and power.

Engineered for Performance:

  • Premium 2618 Alloy Forgings: Built using domestic 2618 alloy, these pistons provide exceptional strength to handle the rigors of high-performance driving.
  • Durable Chrome Moly Wrist Pins: Each set includes high-quality Chrome Moly wrist pins, ensuring robust operation and longevity.
  • Optimized Ring Seal: Features precisely machined ring lands and grooves that guarantee an enhanced ring seal, crucial for maximizing power and preventing blow-by.
  • Advanced Piston Profiles: The cam and barrel profiles are designed to generate substantial power while maintaining gentleness on cylinder walls, promoting engine health.
  • Superior Manufacturing: Manley's unique fixturing process ensures critical components like skirt and ring grooves are machined with ultimate squareness for perfect fitment and function.

This complete piston and ring set is ideal for engine rebuilds and performance upgrades on the EJ257 engine. Experience the difference that high-quality forged components make. Equip your Subaru WRX STi with Manley Performance parts from GGCRACING for unparalleled performance and durability.

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.

Watch in action

Manley Performance 612001C-4 Forged Piston Set for 2004+ Subaru WRX STi (EJ257)

Upgrade your 2004 and later Subaru WRX STi's EJ257 engine with the Manley Performance 612001C-4 forged piston set. This set is precision-engineered with a 99.55mm bore and an 8.5:1 compression ratio, offering a significant performance enhancement for enthusiasts seeking reliability and power.

Engineered for Performance:

  • Premium 2618 Alloy Forgings: Built using domestic 2618 alloy, these pistons provide exceptional strength to handle the rigors of high-performance driving.
  • Durable Chrome Moly Wrist Pins: Each set includes high-quality Chrome Moly wrist pins, ensuring robust operation and longevity.
  • Optimized Ring Seal: Features precisely machined ring lands and grooves that guarantee an enhanced ring seal, crucial for maximizing power and preventing blow-by.
  • Advanced Piston Profiles: The cam and barrel profiles are designed to generate substantial power while maintaining gentleness on cylinder walls, promoting engine health.
  • Superior Manufacturing: Manley's unique fixturing process ensures critical components like skirt and ring grooves are machined with ultimate squareness for perfect fitment and function.

This complete piston and ring set is ideal for engine rebuilds and performance upgrades on the EJ257 engine. Experience the difference that high-quality forged components make. Equip your Subaru WRX STi with Manley Performance parts from GGCRACING for unparalleled performance and durability.

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