What material are these pistons made from?

These Manley pistons are forged from domestic 2618 alloy. This material is chosen for its superior strength and performance characteristics, making it well-suited for high-output engines.

What is included with this piston set?

This set includes the pistons and premium chrome moly wrist pins. Manley also offers optional upgrades for the wrist pins to 9310 and Turbo Tuff/DLC alloys for increased durability.

Are these pistons compatible with all Subaru 2.5L engines?

This specific piston set is designed for the EJ257 engine found in WRX and STi models. It is important to verify fitment for your specific Subaru engine code, as bore size and dish volume can vary between models.

Specifications

Brand: Manley Performance
Part #: 652201CE-4
UPC: 807298116426

Manley Subaru 2.5L EJ257 WRX STi Piston Set - 99.55mm Bore 1.209in CH, -22.00 CC

Name: Manley Subaru 2.5L EJ257 WRX STi Piston Set - 99.55mm Bore 1.209in CH, -22.00 CC
Brand: Manley Performance
SKU: manley-performance-manley-subaru-2-5l-ej257-wrx-sti-piston-set-99-55mm-bore-1-20-t14-880142
Price: 963.51 USD
Availability: BackOrder

$963.51

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley Subaru 2.5L EJ257 WRX STi Piston Set - 99.55mm Bore 1.209in CH, -22.00 CC. Forged from 2618 alloy for superior strength and performance.

Key Features

Fits Subaru 2.5L EJ257 WRX STi engines.
Forged from domestic 2618 alloy for superior strength and performance.
Features proven cam and barrel skirt profiles for power and cylinder wall protection.
Exacting standards for piston ring lands and grooves ensure enhanced ring seal.
Includes premium chrome moly wrist pins; upgrades to 9310 and Turbo Tuff/DLC alloys are available.
Dish volume is -22.00cc.

This piston set is designed for Subaru 2.5L EJ257 engines. It is not CARB approved and cannot be shipped to California.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

Built from domestic 2618 alloy forgings, these Manley pistons are designed for the demanding needs of Subaru 2.5L EJ257 engines. With a 99.55mm bore, 1.209 inch compression height, and a -22.00cc dish volume, they are a solid choice for rebuilding or upgrading your WRX or STi's heart.

Manley puts a lot of thought into how these pistons work inside the cylinder. They use proven cam and barrel skirt profiles that help generate power while also being easier on your cylinder walls. The ring lands and grooves are machined to strict standards, which is key for getting a good seal from your piston rings and making more power. This attention to detail means you're getting a well-built part that's ready for serious use.

Included with this set are premium chrome moly wrist pins. For those looking for even more durability, Manley offers upgrades to 9310 and Turbo Tuff/DLC alloys. It's worth noting that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.