What material are these pistons made from?

These Manley Platinum Series pistons are forged from domestic 2618 alloy. This material is chosen for its superior strength and performance under high stress and temperature conditions.

What is the purpose of the cam and barrel skirt profiles?

The cam and barrel profiles on the piston skirts are designed to help generate substantial power efficiently. They also help to minimize wear on the cylinder walls during operation.

Are these pistons compatible with all Subaru EJ25 engines?

These pistons are specifically designed for Subaru EJ25 engines with a 100mm bore and feature a -17cc dish. It's important to verify that this bore size and dish volume match your specific engine build requirements and cylinder heads. They are not CARB approved and cannot be shipped to California.

Specifications

Brand: Manley Performance
Part #: 632805CE-4
UPC: 807298109121

Manley Subaru EJ25 100mm Bore / 1.209in CD Platinum Series -17cc Dish Extreme Duty Piston Set

Name: Manley Subaru EJ25 100mm Bore / 1.209in CD Platinum Series -17cc Dish Extreme Duty Piston Set
Brand: Manley Performance
SKU: manley-performance-manley-subaru-ej25-100mm-bore-1-209in-cd-platinum-series-17cc-t14-217732
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 EJ25 Platinum Series Extreme Duty Piston Set. Forged 2618 alloy for superior strength and performance.

Key Features

Fits Subaru EJ25 engines with a 100mm bore.
Platinum Series Extreme Duty pistons are forged from domestic 2618 alloy for superior strength.
Features a -17cc dish for specific compression ratio tuning.
Includes premium chrome moly wrist pins for added durability.
Cam and barrel skirt profiles help generate power while being gentle on cylinder walls.
Exacting standards for piston ring lands and grooves enhance ring seal and power.

These pistons are designed for Subaru EJ25 engines with a 100mm bore. Not CARB approved and cannot ship 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

When you're rebuilding the heart of your Subaru EJ25 engine, especially for high-performance applications, choosing the right pistons is critical. These Manley Platinum Series Extreme Duty pistons are built to handle the demands of serious engine builds, offering a robust foundation for power and reliability. They feature a 100mm bore and a -17cc dish, designed to work with specific cylinder head configurations for optimal compression.

Manley uses domestic 2618 alloy forgings, which are known for their exceptional strength and ability to withstand high temperatures and pressures. The pistons also come with premium chrome moly wrist pins, and Manley's signature cam and barrel skirt profiles are included to help generate power efficiently while minimizing wear on your cylinder walls. They also pay close attention to the ring lands and grooves, machining them to strict standards to ensure a tight seal for better power output and reduced blow-by.

These pistons are a popular choice among professional engine builders and tuners because of their proven performance and durability. The unique fixturing Manley uses allows them to machine the skirt and ring grooves in one operation, ensuring the ring grooves are perfectly square to the skirt. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a complete engine build, ensure you have all the necessary supporting components like rings, connecting rods, and bearings.