What is the compression ratio with these pistons?

These pistons feature a dish design that results in a compression ratio of 8.5:1 or 9.0:1. The final ratio will depend on the specific cylinder head volume used in your engine build.

Are these pistons suitable for a high-horsepower build?

Yes, these pistons are forged from 2618 alloy, which is known for its strength and ability to handle higher temperatures and pressures commonly found in high-horsepower applications.

What is included with these pistons?

This set includes the forged pistons, piston rings, and premium chrome moly wrist pins. They are designed as a direct fit for the specified Mitsubishi 4G63T engines.

Specifications

Brand: Manley Performance
Part #: 617000C-4
UPC: 807298036793

Manley 03-06 Mitsubishi Evo 8/9 4G63T 85mm STD Bore 8.5/9.0:1 Dish Pistons w/ Rings

Name: Manley 03-06 Mitsubishi Evo 8/9 4G63T 85mm STD Bore 8.5/9.0:1 Dish Pistons w/ Rings
Brand: Manley Performance
SKU: manley-performance-manley-03-06-mitsubishi-evo-8-9-4g63t-85mm-std-bore-8-5-9-0-1-t14-245945
Price: 758.81 USD
Availability: BackOrder

$758.81

On Backorder

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

Fits 1993-1999 Mitsubishi Eclipse. Manley forged pistons for the 4G63T engine. Built with 2618 alloy for improved strength and durability.

Key Features

Fits 1993-1999 Mitsubishi Eclipse, 1993-1998 Eagle Talon, 2003-2006 Mitsubishi Lancer, and 1993-1994 Plymouth Laser.
Forged from domestic 2618 alloy for superior strength and performance under demanding conditions.
Features a dish design for an 8.5:1 or 9.0:1 compression ratio, suitable for performance tuning.
Includes proven cam and barrel skirt profiles to reduce cylinder wall wear and optimize power.
Exacting ring lands and grooves are machined to strict standards for enhanced ring seal and power output.
Comes with premium chrome moly wrist pins for added durability.

⚠️ 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 heart of your 1993-1999 Mitsubishi Eclipse, especially if you're pushing more power from that 4G63T engine, a solid set of forged pistons is where you want to start. These Manley pistons are built to handle the demands of a performance build, offering a significant step up from stock cast pistons. They feature a dish design that results in a compression ratio of 8.5:1 or 9.0:1, depending on your cylinder head choice, making them a versatile option for various tuning setups.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their strength and ability to withstand higher temperatures and pressures. The pistons also come with proven cam and barrel skirt profiles, designed to reduce friction and wear on your cylinder walls while still generating substantial power. You'll also find exacting standards applied to the ring lands and grooves, which is crucial for a good seal and maximizing the power your engine makes. Each set includes premium chrome moly wrist pins, and Manley's unique manufacturing process ensures the ring grooves are perfectly square to the piston skirts for optimal performance.

This set is designed as a direct fit for your 4G63T engine and includes the necessary rings. Remember that these pistons are not CARB approved and cannot be shipped to California. For a performance build that needs reliable, strong internals, these Manley pistons are a well-built choice.