How many pistons do I need to order?

This product is a single piston. You will need to order one piston for each cylinder in your engine. For a typical 4-cylinder engine, you would order four of these pistons.

What is the significance of the 8.5:1 compression ratio and dish design?

The dish design in the piston crown, combined with other engine components, results in an 8.5:1 compression ratio. This is a lower compression ratio than stock, which is often chosen for forced induction applications like turbocharging or supercharging to allow for more boost without detonation.

What is the benefit of the 2618 alloy forging?

The 2618 alloy is a strong aluminum alloy commonly used in high-performance pistons. It offers good strength at elevated temperatures and is more forgiving of expansion compared to some other alloys, making it suitable for demanding engine builds.

Specifications

Brand: Manley Performance
Part #: 608015C-1
UPC: 807298073910

Manley 03-06 Evo 8/9 4G63T 86.5mm +1.5mm Over Bore 100mm Stroker 8.5:1 Dish Piston - SINGLE

Name: Manley 03-06 Evo 8/9 4G63T 86.5mm +1.5mm Over Bore 100mm Stroker 8.5:1 Dish Piston - SINGLE
Brand: Manley Performance
SKU: manley-performance-manley-03-06-evo-8-9-4g63t-86-5mm-1-5mm-over-bore-100mm-strok-t14-301609
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.

Manley forged piston for 4G63T engines. 86.5mm bore, 8.5:1 compression ratio. Fits many Mitsubishi and Eagle models.

Key Features

Fits 2003-2006 Mitsubishi Lancer, 1993-1999 Mitsubishi Eclipse, 1993-1998 Eagle Talon, and other select Mitsubishi and Eagle models.
Single forged piston with an 86.5mm bore size, designed for a 100mm stroke and 8.5:1 compression ratio.
Constructed from domestic 2618 alloy forgings for strength and performance.
Features cam and barrel skirt profiles for efficient power generation and cylinder wall protection.
Includes premium chrome moly wrist pins for durability.
Ring lands and grooves are machined to exacting standards for improved ring seal.

⚠️ 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 single Manley Performance forged piston designed for the 4G63T engine, commonly found in models like the Mitsubishi Lancer Evolution VIII and IX, as well as older DSM cars such as the Eagle Talon and Mitsubishi Eclipse. It features an 86.5mm bore size, which is a +1.5mm overbore for a 100mm stroke application, and a dish design that results in a compression ratio of 8.5:1. This piston is built for those looking to rebuild or significantly upgrade their engine internals.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their strength and ability to handle high performance demands. They also feature cam and barrel skirt profiles that help manage power output while being easier on the cylinder walls. The ring lands and grooves are machined to strict standards to ensure a good seal with the piston rings, which is crucial for making power. Each piston comes with premium chrome moly wrist pins, and Manley's unique manufacturing process ensures the ring grooves are square to the piston skirt.

This piston is sold individually, so you'll need to order the correct quantity for your engine. It's important to note that this part is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.