What is included in this piston set?

This Manley piston set includes the pistons, piston rings, and tool steel wrist pins. It is designed to be a complete set for rebuilding or upgrading your engine's pistons.

What is the advantage of the 2618 alloy forgings?

The 2618 alloy is chosen for its superior strength and performance characteristics, making these pistons well-suited for demanding engine applications where durability and power are important.

Can these pistons be used with my stock engine components?

Yes, these pistons have a standard bore size of 99.5mm and an 8.5:1 dish volume, which are designed to work with the stock stroke of the EJ257 engine found in the 2004-2012 Subaru Impreza.

Specifications

Brand: Manley Performance
Part #: 612000C-4
UPC: 807298042091

Manley 04+ Subaru WRX STi (EJ257) STD Stroke 99.5mm STD Bore 8.5:1 Dish Piston Set with Rings

Name: Manley 04+ Subaru WRX STi (EJ257) STD Stroke 99.5mm STD Bore 8.5:1 Dish Piston Set with Rings
Brand: Manley Performance
SKU: manley-performance-manley-04-subaru-wrx-sti-ej257-std-stroke-99-5mm-std-bore-8-5-t14-5680
Price: 758.81 USD
Availability: InStock

$758.81

Only 3 left in stock

Fits 2004-2012 Subaru Impreza. Manley forged piston set with rings for improved engine performance and durability.

Key Features

Fits 2004-2012 Subaru Impreza.
Constructed from domestic 2618 alloy forgings for superior strength.
Features proven cam and barrel skirt profiles for reduced cylinder wall wear.
Includes tool steel wrist pins and exacting ring lands for enhanced ring seal.
Standard bore size of 99.5mm and 8.5:1 dish volume for stock stroke applications.
Comes complete with piston rings.

⚠️ 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

Starting with domestic 2618 alloy forgings, these Manley pistons are built for serious performance in your 2004-2012 Subaru Impreza WRX STI with the EJ257 engine. The 99.5mm standard bore size and 8.5:1 dish volume are designed to work with the stock stroke, making them a solid choice for rebuilding or upgrading your engine's core components.

Manley uses proven cam and barrel skirt profiles that help reduce friction and wear on your cylinder walls, while also contributing to power gains. The ring lands and grooves are machined to exacting standards, which is crucial for getting a good seal from your piston rings. This enhanced seal means more consistent power delivery and better overall engine health. These pistons also come with premium chrome moly wrist pins, and Manley's unique fixturing process ensures the ring grooves are perfectly square to the skirt for optimal performance.

This set includes the pistons, rings, and tool steel wrist pins, so you have the essential components to get your engine back together. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. If you're rebuilding the top end of your EJ257, these Manley pistons are a well-built option that many professional engine builders trust.