What is the compression ratio of this piston?

This Manley piston features a dish design that results in a compression ratio of 8.5:1. This is often beneficial for turbocharged or supercharged engines.

What material is this piston made from?

The piston is forged from 2618 alloy, a material known for its superior strength and performance characteristics, making it suitable for demanding engine applications.

Does this piston come with piston rings?

Yes, this Manley piston includes a set of piston rings. It also comes standard with tool steel wrist pins.

Specifications

Brand: Manley Performance
Part #: 620005C-1
UPC: 807298067889

Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92.5mm +0.5mm Bore 8.5:1 Dish Single Piston w/ Rings

Name: Manley 98+ Subaru WRX (EJ205) 79mm +4mm Stroker 92.5mm +0.5mm Bore 8.5:1 Dish Single Piston w/ Rings
Brand: Manley Performance
SKU: manley-performance-manley-98-subaru-wrx-ej205-79mm-4mm-stroker-92-5mm-0-5mm-bore-t14-4360191
Price: 189.71 USD
Availability: BackOrder

$189.71

On Backorder

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

Fits 2002-2005 Subaru Impreza. Manley forged piston with rings, 92.5mm bore, 8.5:1 dish, for improved engine performance.

Key Features

Fits 2002-2005 Subaru Impreza.
Manley Performance forged piston with rings.
Features a 92.5mm bore and 8.5:1 dish compression ratio.
Constructed from strong 2618 alloy forgings for durability.
Includes tool steel wrist pins for added strength.
Designed with specific cam and barrel skirt profiles to reduce wear and improve power.

⚠️ 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

If you're rebuilding the engine in your 2002-2005 Subaru Impreza, these single pistons from Manley Performance are a solid option. They're designed for the EJ205 engine, featuring a 92.5mm bore and a dish that results in an 8.5:1 compression ratio, which is great for boosted applications where you want a bit more control over detonation.

Manley uses 2618 alloy forgings for these pistons, which are known for being strong and able to handle the demands of performance engines. The skirt profiles are carefully shaped to reduce friction and wear on the cylinder walls while still helping to make power. They also come with tool steel wrist pins and have precise ring lands and grooves, which are important for getting a good seal with the piston rings, ultimately leading to better power output and engine efficiency.

These pistons are sold individually, so be sure to order the correct quantity for your engine build. They are not CARB approved and cannot be shipped to California.