What is the purpose of the dish design on these pistons?

The dish design on these pistons creates an 8.5:1 compression ratio. This lower compression is beneficial for turbocharged or supercharged engines, as it helps prevent detonation or 'knocking' under high boost conditions.

What is the benefit of using 2618 alloy forgings?

2618 alloy is a strong and durable material commonly used in performance pistons. It has good thermal expansion properties, allowing it to withstand the high temperatures and pressures found in performance engines while maintaining its shape.

Are any special tools or parts needed for installation?

These pistons are designed for a 100mm stroke crankshaft and require an overbore of +2.0mm. It is recommended to consult the manufacturer's installation guide for specific details on required tools, torque specifications, and any other necessary components for a successful engine build.

Specifications

Brand: Manley Performance
Part #: 608020C-4
UPC: 807298073941

Manley 03-06 Evo 8/9 4G63T 87.0mm +2.0mm Over Bore 100mm Stroker 8.5:1 Dish Pistons w/ Rings

Name: Manley 03-06 Evo 8/9 4G63T 87.0mm +2.0mm Over Bore 100mm Stroker 8.5:1 Dish Pistons w/ Rings
Brand: Manley Performance
SKU: manley-performance-manley-03-06-evo-8-9-4g63t-87-0mm-2-0mm-over-bore-100mm-strok-t14-253312
Price: 758.81 USD
Availability: BackOrder

$758.81

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Manley 03-06 Evo 8/9 4G63T 87.0mm +2.0mm Over Bore 100mm Stroker 8.5:1 Dish Pistons w/ Rings. Forged pistons for improved engine performance and durability.

Key Features

Fits a range of vehicles including 2003-2006 Mitsubishi Lancer, 1993-1999 Mitsubishi Eclipse, and 1993-1998 Eagle Talon.
Forged from domestic 2618 alloy for superior strength and performance.
Features a dish design for an 8.5:1 compression ratio, ideal for boosted engines.
Designed for use with a 100mm stroke crankshaft, increasing engine displacement.
Includes tool steel wrist pins for enhanced durability.
Cam and barrel skirt profiles help ensure smooth operation and reduce cylinder wall wear.

⚠️ 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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Will this fit your vehicle?

About this part

Product Details

If you're rebuilding the engine in your 2003-2006 Mitsubishi Lancer Evolution or a similar 4G63T-powered vehicle, these Manley 87.0mm +2.0mm over bore pistons are a solid choice for a high-performance build. These pistons are designed to work with a 100mm stroke crankshaft, effectively increasing displacement for more power. They feature a dish design that results in a compression ratio of 8.5:1, which is well-suited for boosted applications where detonation resistance is key.

Manley uses domestic 2618 alloy forgings for these pistons, a material known for its strength and ability to handle the stresses of performance engines. The pistons also feature proven cam and barrel skirt profiles, which help them run smoothly and quietly while minimizing wear on your cylinder walls. The ring lands and grooves are machined to strict standards, ensuring a good seal for better power output. Each set includes tool steel wrist pins for added durability, and the unique fixturing Manley uses allows for precise machining of both the skirt and ring grooves in one operation, ensuring they are perfectly square to each other.

This set is designed to fit a range of vehicles, including the Mitsubishi Lancer Evolution, Eclipse, and Galant, as well as the Eagle Talon and Plymouth Laser. They come complete with rings, ready for installation. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.