-7%
Manley Performance Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set
Manley Performance Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set
Click to zoom in

Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set

MAN632205CE-4
807298088136
Piston Sets - Forged - 4cyl
4 Units In Stock - Ships Next Business Day
$ 1,022.95 $ 941.12
$ 941.12

SKU: 632205CE-4 | UPC: 807298088136

Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm Size 8.5:1 Dish Extreme Duty Piston Set

Manley Extreme Duty piston set delivers forged performance for 2004 and later Subaru WRX and STI models equipped with EJ257 2.5L turbo engines. This Platinum Series kit features 100.5mm bore sizing with 8.5:1 compression ratio ideal for high boost turbo builds handling up to 1000+ horsepower. Engine builders choose these pistons for reliable power gains and long term durability in racing and street applications.

Key Features

  • Forged 2618-T6 Alloy: Aerospace grade material resists detonation and high cylinder pressures in boosted setups
  • 8.5cc Dish Design: Lowers compression to 8.5:1 perfect for aggressive turbocharging and nitrous use
  • Tool Steel Wrist Pins: H13 hardened pins measure 22mm diameter x 50.8mm length rated for extreme RPM and load
  • Moly Phosphate Skirt Coating: Reduces scuffing friction and galling during break-in and high heat operation
  • Precision Skirt Profiles: Optimized cam and barrel shapes control piston rock for quieter operation and better ring seal

Product Notes

  • Set of 4 pistons complete with pins and rings 1.2mm/1.5mm/2.8mm sizes
  • Compression height 30mm stroke 79mm rod 130.5mm assembled weight 503 grams per piston
  • Accumulator groove above top ring prevents flutter under high boost

Installation Notes

  • Professional installation recommended.
  • Bore cylinders to 100.500-100.515mm clearanced for rings hone to Ra 15-20 microinch
  • Includes pins fits OEM or ARP rod small end use moly assembly lube

This Part Fits

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

Why Choose Manley?

  • Engine builders and tuners trust Manley for championship winning engines
  • Hand assembled and inspected in USA facility
  • Extensive dyno and track testing backs every set

Frequently Asked Questions

  • Q: Does this piston set fit all EJ257 engines in 2004+ STI models?
    A: Yes fits every USDM Subaru STI EJ257 from 2004-2021 verify your bore needs oversize machining
  • Q: What alloy and coatings are used?
    A: 2618-T6 forged aluminum with moly phosphate skirts and ceramic top ring grooves for heat resistance
  • Q: Are rings pins included warranty details?
    A: Complete set includes rings and H13 pins contact Manley for warranty on manufacturing defects

Shipping & Handling

  • Method: UPS Ground or FedEx
  • Availability: In stock - ships same or next business day
  • Packaging: Foam protected custom box 12 x 12 x 6 inches
  • Weight: 5.4 lbs

Request For Information

Have questions about Manley 04+ Subaru WRX/STI EH257 100.0mm Bore +.50mm 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.
Engine

Engine

Engine parts and engine bay upgrades for Dodge, Jeep, RAM, Chrysler, Chevrolet, Ford, Toyota, Nissan, Subaru, and Honda vehicles are stocked at Black Ops Auto Works. Shop oil catch cans, supercharger pulleys, thermostats, radiators, cooling parts, throttle bodies, intake manifolds, headers, ignition coils, spark plugs, sensors, gaskets, fuel pumps, valve covers, engine covers, billet cap covers, and full engine bay dress-up parts for HEMI, Hellcat, Trackhawk, Redeye, Demon, Scat Pack, RAM TRX, LS, LT, Coyote, EcoBoost, K-Series, and 2JZ builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 14,298 engine SKUs across performance, cooling, oil control, ignition, and appearance categories. What This Category Covers The Engine collection combines OEM-replacement engine service parts with performance aftermarket upgrades for supercharged, turbocharged, and naturally aspirated builds...

View Engine Products
Manley Performance

Manley Performance

Manley Performance is a New Jersey-founded engine internals manufacturer stocked at Black Ops Auto Works, supplying forged pistons, connecting rods, valves, and crankshafts across domestic and import platforms. Shop Manley H-Beam and H-Tuff connecting rods, Race Master Series valves, forged crankshafts, and valve springs for Ford Modular and Coyote, Chrysler HEMI, Subaru EJ and FA, Nissan SR20 and 2JZ, Honda B and H-series, and Mitsubishi 4B11T and Mazda MZR platforms. Every product is filterable by year, make, model, and engine code so the correct part ships the first time. Black Ops Auto Works carries 270 Manley Performance SKUs across pistons, rotating assembly, and valvetrain components. About Manley Performance Founded in 1966 by Hank Manley as Manley Speed Equipment, Manley Performance has grown into one of the most established names in high-performance engine internals. From grassroots drag racing roots in New Jersey to a second manufacturing facility in Orange, Californi...

View Manley Performance Products
Piston Sets - Forged - 4cyl

Piston Sets - Forged - 4cyl

Forged 4-cylinder piston sets built for boosted street and race engines are stocked at Black Ops Auto Works. Shop forged piston sets from leading manufacturers sized for popular 4-cylinder turbo platforms, engineered to handle high boost, high compression, and repeated hard use without the failure risk of cast pistons. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct piston set ships the first time. Black Ops Auto Works carries 402 forged 4-cylinder piston set SKUs across bore size, compression ratio, and platform fitment. What This Category Covers The Piston Sets - Forged - 4cyl collection covers complete forged piston sets for inline-4 turbo and naturally aspirated engines, sized to specific bore diameters and offered in multiple compression ratios for street, drag, and road race builds. The catalog is strongest on Manley, Wiseco, and CP-Carrillo forged sets for common Honda, Subaru, Mitsubishi, and Mazda 4-cylinder turbo platforms....

View Piston Sets - Forged - 4cyl Products
Pistons

Pistons

Pistons and piston components for engine builds and rebuilds are stocked at Black Ops Auto Works. Shop forged and cast piston sets, piston rings, piston pins, and pin locks for 4, 5, 6, and 8-cylinder gas engines and diesel applications, including Cummins 5.9L 12-valve, Toyota 2JZGTE, Honda K20, BMW and Toyota B58, GM 6.2L LT1 and L86, Chrysler Gen3 Hemi 6.2L Hellcat and 6.4L Apache, and Nissan VQ35DE builds. Every product is filterable by bore size, engine platform, compression ratio, and application so the correct piston set ships the first time. Black Ops Auto Works carries 997 piston and piston component SKUs across forged, cast, and diesel-specific categories. What This Category Covers Pistons are the core moving component of any engine build, transferring combustion force into rotational power through the connecting rod and crankshaft. This category covers complete piston sets plus the individual components, rings, pins, and pin locks, needed for a full rebuild or performa...

View Pistons Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×