What is included in this piston set?

This Manley piston set includes four forged pistons. Each piston measures 100.00mm in bore diameter and has a -17.00 CC dish. Tool steel wrist pins are also included with the pistons.

What material are these pistons made from and why is it important?

These pistons are forged from domestic 2618 alloy. This material is chosen for its superior strength and performance capabilities, making it well-suited for demanding engine applications where durability and power are critical.

Are piston rings and bearings included with this set?

Piston rings and bearings are typically sold separately for this Manley piston set. It is recommended to consult with your engine builder or refer to Manley's specifications to select the appropriate rings and bearings for your specific engine build.

Specifications

Brand: Manley Performance
Part #: 652805CE-4
UPC: 807298116983

Manley Subaru 2.5L EJ257 WRX STi Piston Set - 100.00mm Bore 1.209in CH, -17.00 CC

Name: Manley Subaru 2.5L EJ257 WRX STi Piston Set - 100.00mm Bore 1.209in CH, -17.00 CC
Brand: Manley Performance
SKU: manley-performance-manley-subaru-2-5l-ej257-wrx-sti-piston-set-100-00mm-bore-1-2-t14-880130
Price: 963.51 USD
Availability: BackOrder

$963.51

On Backorder

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Manley Subaru 2.5L EJ257 WRX STi Piston Set - 100.00mm Bore 1.209in CH, -17.00 CC. Forged from 2618 alloy for superior strength and performance.

Key Features

Fits Subaru 2.5L EJ257 WRX STi engines.
Set includes four pistons with a 100.00mm bore diameter.
Constructed from domestic 2618 alloy forgings for superior strength.
Features proven cam and barrel skirt profiles for power and cylinder wall protection.
Exacting ring lands and grooves ensure enhanced ring seal and more power.
Includes tool steel wrist pins for added durability.

This piston set is designed for Subaru 2.5L EJ257 engines. Please verify compatibility with your specific vehicle model and year.

⚠️ 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 Manley piston set is built for Subaru 2.5L EJ257 engines, commonly found in WRX STi models. You get a complete set of four pistons, each measuring 100.00mm in bore diameter. These pistons are designed to handle the demands of performance builds, offering a solid foundation for your engine's top end.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their strength and ability to perform under pressure. They feature proven cam and barrel skirt profiles, designed to generate power while also being considerate of your cylinder walls during operation. The ring lands and grooves are machined to exacting standards, which helps ensure a better seal for your piston rings, leading to improved power output. The included wrist pins are made from tool steel for added durability. Manley's unique manufacturing process allows them to machine the skirt and ring grooves in a single setup, ensuring the ring grooves are perfectly square to the skirt for optimal performance.

This set is not CARB approved and cannot be shipped to California. It's important to note that these pistons have a -17.00 CC dish volume, which will affect your engine's compression ratio. Always consult with your engine builder or tuner to ensure these pistons are the right choice for your specific build goals and to determine any other components needed for installation, such as rings and bearings, which are typically sold separately.