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Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set
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Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set

MAN632200CE-4
807298088075
Piston Sets - Forged - 4cyl
9 Units In Stock - Ships Next Business Day
$ 1,022.95 $ 941.12
$ 941.12

SKU: 632200CE-4 | UPC: 807298088075

Manley 04+ Subaru WRX/STI EJ257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set

This Manley Platinum Series piston set delivers forged performance for 2004+ Subaru Impreza WRX and STI models with EJ257 2.5L DOHC engines. Featuring 99.50mm standard bore and 8.5:1 compression ratio with dish top, these pistons support high-boost turbo builds while maintaining reliability under extreme conditions. Engine builders choose this set for its strength in 2.5L Subaru applications.

Key Features

  • 2618 T6 Alloy Forgings: High-tensile strength material handles high heat and pressure in boosted EJ257 engines
  • Proven Skirt Profiles: Cam and barrel design reduces noise and wear for consistent power delivery
  • Moly Coatings: Skirts and crowns coated to minimize friction and galling during high-rpm operation
  • Tool Steel Wrist Pins: H13 pins (21mm x 48mm) with spiral locks provide secure retention under heavy loads
  • Advanced Ring Grooves: Accumulator groove and reverse-milled design improve ring seal and reduce blow-by

Product Notes

  • Set includes 4 pistons, pins, and locks. rings sold separately
  • Compression height 30mm suits 79mm stroke and 130.5mm rods
  • Ships in protective packaging to prevent damage

Installation Notes

  • Professional installation recommended.
  • Verify cylinder bore at 99.50mm. honing may be required for optimal fit
  • Compatible with stock or aftermarket rods. use assembly lube on pins and skirts

This Part Fits

Year Make Model Submodel
2004-2007 Subaru Impreza WRX STI
2008-2014 Subaru Impreza WRX STI
2008-2014 Subaru Impreza WRX STI Hatchback
2015-2021 Subaru WRX STI
2015-2021 Subaru WRX STI Limited

Why Choose Manley?

  • Trusted by professional engine builders for Subaru turbo engines
  • Proven durability in racing and street performance applications
  • Precision-machined components ensure exact fit and balance

Frequently Asked Questions

  • Q: Which engines does this fit?
    A: Designed for 2004-2021 Subaru EJ257 2.5L DOHC in WRX and STI models with 99.50mm stock bore
  • Q: What material and specs?
    A: Forged 2618 T6 alloy pistons, -17.2cc dish, 362g weight per piston, 1.2/1.5/2.8mm ring grooves
  • Q: What about warranty and install?
    A: Backed by Manley warranty. requires professional machining and assembly for best results

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Foam protected box 12.1 x 12.1 x 4.3 inches
  • Weight: 3.65 lbs

Request For Information

Have questions about Manley 04+ Subaru WRX/STI EH257 99.50mm Bore STD Size 8.5:1 Dish Extreme Duty Piston Set? Fill out the form below and we'll get back to you by the next business day.
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