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Manley 04+ Subaru WRX STi (EJ257) STD Stroke 99.55mm +.05mm Bore 8.5:1 Dish Piston and Ring Set

SKU: MAN612001C-4

Pistons

MAN Piston Sets - 4 Cyl

Manley 04+ Subaru WRX STi (EJ257) STD Stroke 99.55mm +.05mm Bore 8.5:1 Dish Piston and Ring Set

SKU: MAN612001C-4

Pistons

MAN Piston Sets - 4 Cyl

A$1,394.16
IN STOCK! Est Ship 3-5 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

Our signature "Platinum Series" pistons feature 2618 alloy forgings, proven cam and barrel skirt profiles, tool steel wrist pins, and moly skirt coatings on select part numbers. Join the ranks of professional engine builders and tuners who rely on Manley pistons for superior performance and durability.

Part Type

Engine Piston Set

Data: v4.2 - Upd: 2026-09-29 08:00:20

Features

  • 2618 Alloy Forgings: We use domestic 2618 alloy forgings, ensuring superior strength and performance.
  • Cam and Barrel Profiles: Our pistons boast cam and barrel (skirt) profiles that generate substantial power while being gentle on cylinder walls.
  • Chrome Moly Wrist Pins: Premium Chrome Moly wrist pins come standard with our Standard Series Pistons. For select SKUs, we offer wrist pin upgrades to 9310 and Turbo Tuff/DLC alloys, providing additional durability.
  • Exacting Ring Lands and Grooves: We adhere to strict standards for piston ring lands and grooves, resulting in enhanced ring seal and more power.
  • Unique Fixturing: Manley's unique fixturing allows for skirt turning and ring groove machining in a single operation, ensuring ultimate ring groove to skirt squareness.

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
612001C-4
Product Attributes - Part Type
Pistons
Product Attributes - Product Line
Manley Platinum Series Pistons
Product Attributes - UPC
807298084374
Product Attributes - Piston Rings Included
No
Product Attributes - Bore (in.)
3.919 in.
Product Attributes - Bore (mm)
99.550mm
Product Attributes - Stroke
79.00mm
Product Attributes - Engine Stroke Type
Stock
Product Attributes - Actual Engine Displacement
2.5L/2458cc
Product Attributes - Rod Length
130.500mm
Product Attributes - Piston Style
Dish, with four valve reliefs
Product Attributes - Piston Material
Forged aluminum
Product Attributes - Compression Height (in.)
1.209 in.
Product Attributes - Piston Head Volume (cc)
-22.00cc
Product Attributes - Wrist Pin Style
Press-fit or floating
Product Attributes - Wrist Pin Retainers Included
Yes
Product Attributes - Wrist Pin Included
Yes
Product Attributes - Pin Diameter (in.)
0.906 in.
Product Attributes - Piston Ring Thickness
1.20mm x 1.20mm x 2.00mm
Product Attributes - File Fit
No
Product Attributes - Gapless
No
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a set of 4.
Product Attributes - Notes
Designed for STI engines.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man612001C-4
SFX Item ID 4060465
Supplier Item Code 4060465
Manufacturer SKU 612001C-4
Manufacturer UPC 807298084374
Alternative References (EJ257), 99.55mm, +.05mm

Compatibility

Application Data
  • Beginning Year2004
    Ending Year2014
    Engine FamilySubaru 4-cylinder
    Engine Size2.5L/2458cc
    Engine TypeH4
    MakeSUBARU

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