Engines and Components› Pistons and Piston Rings

JE Pistons

SUB STI EJ257 9.5KIT

$314.99

SKU: J001 310937L

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Description

The JE Pistons 310937L is a forged racing piston for high-performance Subaru EJ series engines, specifically those with EJ257 STI cylinder heads. It features a 99.75 mm (3.927 in) bore and a dish piston head type, made from durable 2618 material. A ringset is included for optimal sealing.

Fitment

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Specifications

BrandJE Pistons
Part NumberJ001 310937L

Videos

Project Import: JE Pistons 291060 for EJ25 block w/ EJ20 heads

Project Import: JE Pistons 291060 for EJ25 block w/ EJ20 heads

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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