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Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)
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Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)

MAN632200CA-1
807298085883
Pistons - Forged - Single
10 Units In Stock - Ships Next Business Day
$ 219.73 $ 202.15
$ 202.15

SKU: 632200CA-1 | UPC: 807298085883

Manley 04+ Subaru WRX/STI EH257 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)

Upgrade your Subaru EJ257 engine with this Manley Platinum Series forged piston designed for 2004+ WRX and STI models. Machined to 99.50mm standard bore (Grade A) with an 8.5:1 dish for boosted applications, it delivers reliable power handling in turbocharged 2.5L builds. Engine builders choose this single piston for its strength in high-horsepower setups.

Key Features

  • 2618-T61 Forged Alloy: High-silicon aluminum withstands extreme heat and detonation in turbo engines
  • Proven Skirt Design: Cam and barrel profiles reduce friction and noise while improving ring seal
  • Tool Steel Wrist Pin: 0.866" x 2.440" diameter pin with wire locks for secure rod connection under load
  • Moly Skirt Coating: Reduces scuffing and galling for smoother break-in and longer life
  • 8.5:1 Compression: -8cc dish volume suits low-compression turbo builds with 79mm stroke and 130.5mm rods

Product Notes

  • Rings, pins, and locks sold separately. use Manley 51800-4 rings for best results
  • Measure bores before installation. Grade A tolerances ensure ±0.0005" accuracy
  • Single piston packaging protects against shipping damage

Installation Notes

  • Professional installation recommended.
  • Hone cylinders to 99.505-99.515mm. check clearance at 0.0035-0.0045"
  • Compatible with OEM or aftermarket rods. verify compression height 30.00mm

This Part Fits

Year Make Model Submodel
2004-2007 Subaru Impreza WRX STI
2008-2014 Subaru Impreza WRX STI
2015-2021 Subaru WRX STI
2005-2009 Subaru Legacy 2.5 GT
2004-2011 Subaru Forester XT

Why Choose Manley?

  • Trusted by pro racers in drag and rally for consistent results
  • Hand-built in USA with tight tolerances for every piston
  • Backed by decades of engine component engineering

Frequently Asked Questions

  • Q: Will this piston fit 2004-2021 STI EJ257 engines?
    A: Yes, direct fit for stock bore 99.50mm EJ257 in all listed STI models. confirm stroke and rod length
  • Q: What material and weight specs?
    A: 2618-T61 alloy construction weighs 392 grams complete. includes moly coating and chromoly pin
  • Q: What warranty covers this piston?
    A: Manley offers 1-year unlimited mileage warranty with proper installation and break-in

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Foam-protected box 6" x 6" x 4"
  • Weight: 1 lb

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