Engines and Components› Pistons and Piston Rings

Manley Performance

Manley Subaru WRX STi (EJ257) 99.5mm Bore STD Size 8.5 CR 83mm Stroke Piston w/Ring *SINGLE ONLY*

$238.79

SKU: M004 622000C-1

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Description

The Manley Performance Platinum Series Piston Set is a high-performance component designed for Subaru WRX and STI models with the EJ257 engine. This piston features a 99.5mm bore size and a standard (STD) oversize. It is constructed from a 2618 alloy and includes a dish-type piston with a 51cc dome volume, resulting in a compression ratio of 8.5:1. The piston is equipped with a tool steel wrist pin and a moly skirt coating.

Fitment

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Specifications

BrandManley Performance
Part NumberM004 622000C-1

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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