What is included in this piston set?

This Manley Performance piston set includes four forged pistons, each with a 99.50mm bore, 1.130 inch compression height, and -14.00 CC dish volume. It also comes with premium chrome moly wrist pins.

What material are these pistons made from?

These pistons are forged from domestic 2618 alloy, which is chosen for its superior strength and performance characteristics, making them well-suited for demanding engine applications.

Are these pistons compatible with all Subaru WRX STi models?

This piston set is specifically designed for the Subaru 2.5L EJ257 engine. While this engine is common in many WRX STi models, it's always best to confirm your engine code and vehicle specifications before purchasing.

Specifications

Brand: Manley Performance
Part #: 652500CE-4
UPC: 807298116747

Manley Subaru 2.5L EJ257 WRX STi Piston Set - 99.50mm Bore 1.130in CH, -14.00 CC

Name: Manley Subaru 2.5L EJ257 WRX STi Piston Set - 99.50mm Bore 1.130in CH, -14.00 CC
Brand: Manley Performance
SKU: manley-performance-manley-subaru-2-5l-ej257-wrx-sti-piston-set-99-50mm-bore-1-13-t14-880154
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 - 99.50mm Bore 1.130in CH, -14.00 CC. Forged from 2618 alloy for superior strength.

Key Features

Fits Subaru 2.5L EJ257 WRX STi engines.
Set includes four forged pistons with a 99.50mm bore.
Features a 1.130 inch compression height and -14.00 CC dish volume.
Constructed from domestic 2618 alloy forgings for superior strength.
Includes premium chrome moly wrist pins for added durability.
Cam and barrel skirt profiles are designed for power and cylinder wall protection.

This piston set is designed for Subaru 2.5L EJ257 engines. Please verify fitment with your specific vehicle application.

⚠️ 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

This is a set of Manley Performance forged pistons designed for the Subaru 2.5L EJ257 engine, commonly found in WRX STi models. You get four pistons, each with a 99.50mm bore size, a compression height of 1.130 inches, and a dish volume of -14.00 CC. These pistons are built to handle the demands of performance engines, offering a solid foundation for rebuilding or upgrading your Subaru's powerplant.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their strength and ability to perform under high stress. They feature proven cam and barrel skirt profiles, designed to generate power efficiently while also being considerate of your cylinder walls during operation. The ring lands and grooves are machined to strict standards, which helps ensure a good seal for the piston rings, contributing to better power output. Included with this set are premium chrome moly wrist pins, adding to the overall durability of the assembly.

Manley's unique manufacturing process allows them to machine the skirt and cut the ring grooves in a single operation. This ensures the ring grooves are perfectly square to the piston skirt, which is critical for proper ring seal and engine performance. Keep in mind that these pistons are not CARB approved and cannot be shipped to California.