Engines and Components› Pistons and Piston Rings

Manley Performance

Manley 04+ Subaru WRX/STI Extreme Duty 99.50mm STD (Grade A) Bore 8.5:1 Dish Piston (SINGLE PISTON)

$299.17

SKU: M004 632200CEA-1

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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Manley Performance Turbo Tuff piston is a high-strength, extreme-duty component designed for Subaru WRX and STI models with the EJ257 engine. It is constructed from 2618 alloy forgings for enhanced durability over standard series pistons.

This piston features a 99.50mm bore size (STD Oversize), a 5.137-inch rod length, and a stroke of 1.209 inches. It has a -22cc dome volume, a 51cc cylinder head volume, and results in a 8.5:1 compression ratio. The piston type is dish, and it includes a high-strength Extreme .250" wall wrist pin and an associated ring set (PN 46995DT).

Fitment

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Specifications

BrandManley Performance
Part NumberM004 632200CEA-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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