Description
This Extreme Duty piston family targets 2004+ Subaru WRX/STI EJ257 engine combinations and should be selected from the finished-bore specification rather than from vehicle fitment alone. The parent listing is distinguished by 99.75mm / 8.5:1, which should be cross-checked against the rest of the engine combination.
Because this is a 2004+ Subaru WRX/STI EJ257 piston family, final fitment depends on the machine shop’s finished cylinder measurement and the intended rod/stroke combination—not simply on nominal engine displacement.
Key Product Details
- Application: 2004+ Subaru WRX/STI EJ257
- Manley Series: Extreme Duty
- Title Specification: 99.75mm / 8.5:1
- Product Family Detail: 2618-alloy forged piston construction
- Product Family Detail: tool-steel wrist-pin hardware on applicable part numbers
- Product Family Detail: moly skirt coating on applicable part numbers
- Manufacturer Part Number: 632202CE-1
Package Quantity
Sold individually. This listing supplies one piston per selected SKU; order the quantity required for your engine and verify that all pistons match the machine shop’s bore/grade plan. This quantity applies to the selected Manley SKU family shown on this product page.
Selection & Fitment Notes
Machine-shop measurements should determine the final piston selection. Check bore class/grade, compression geometry, ring package, pin dimensions, and intended rod/stroke combination.
Professional engine assembly and measurement are recommended. Product specifications should be confirmed against the selected Manley part number and the requirements of the exact engine build.