Engines and Components› Pistons and Piston Rings

JE Pistons

JE Pistons Subaru EJ Series 99.52 mm Bore 1.209 In CH -7.00 CC - Single Left Piston

$314.99

SKU: J001 310936L

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Description

JE Pistons is a leader in forged racing pistons with over 70 years of experience. They offer in-house forging and industry-leading technology, designing pistons to perform at the highest levels of motorsports. This piston is designed for the Subaru EJ Series engine, specifically compatible with the EJ257 STI cylinder head, featuring a bore diameter of 99.52 mm (3.917 inches), a compression height of 1.209 in, and a piston volume of -7.

Fitment

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Specifications

BrandJE Pistons
Part NumberJ001 310936L

Videos

How to Build a Subaru EJ Engine that won't BLOW UP!

How to Build a Subaru EJ Engine that won't BLOW UP!
Project Import: JE Pistons 291060 for EJ25 block w/ EJ20 heads

Project Import: JE Pistons 291060 for EJ25 block w/ EJ20 heads
Mark Jager's 900hp EJ25 Build with BoostLine Rods

Mark Jager's 900hp EJ25 Build with BoostLine Rods
Subaru STI EJ25 build part 2 pistons and rings

Subaru STI EJ25 build part 2 pistons and rings
What is a Subaru/WRX Hybrid Swap?

What is a Subaru/WRX Hybrid Swap?
EXCESSIVE Piston to Bore Clearance?

EXCESSIVE Piston to Bore Clearance?
Subaru ring land failure explained. Applies to all pistons. Ej25 and others.

Subaru ring land failure explained. Applies to all pistons. Ej25 and others.
Building a 500WHP Capable EJ25 to Giveaway!

Building a 500WHP Capable EJ25 to Giveaway!

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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