What is the compression ratio of these pistons?

These Manley pistons offer a 10.0:1 or 10.5:1 compression ratio. The exact ratio achieved will depend on the combustion chamber volume of your cylinder head.

What material are the pistons made from?

The pistons are forged from Manley's signature 2618 alloy, which is known for its strength and reliability in high-performance engine applications.

Are these pistons compatible with all 4G63T engines?

These pistons are specifically designed for the 4G63T engine found in models like the 2003-2006 Mitsubishi Lancer Evolution, as well as earlier DSM (Diamond-Star Motors) vehicles like the Eclipse and Talon. Always verify fitment for your specific year and model.

Specifications

Brand: Manley Performance
Part #: 606220C-4
UPC: 807298074764

Manley 03-06 Evo 8/9 4G63T 87.0mm +2.0mm Over Bore 10.0/10.5:1 Flat Top Pistons w/ Rings

Name: Manley 03-06 Evo 8/9 4G63T 87.0mm +2.0mm Over Bore 10.0/10.5:1 Flat Top Pistons w/ Rings
Brand: Manley Performance
SKU: manley-performance-manley-03-06-evo-8-9-4g63t-87-0mm-2-0mm-over-bore-10-0-10-5-1-t14-280371
Price: 758.81 USD
Availability: BackOrder

$758.81

On Backorder

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Manley 03-06 Evo 8/9 4G63T 87.0mm +2.0mm Over Bore 10.0/10.5:1 Flat Top Pistons w/ Rings. These forged pistons are built for high-performance 4G63T engines.

Key Features

Fits 1993-2006 Mitsubishi Lancer, 1993-1999 Eclipse, 1993-1998 Eagle Talon, and other select vehicles.
87.0mm bore size with a +2.0mm overbore, suitable for engine rebuilding.
Flat top piston design with a 10.0:1 or 10.5:1 compression ratio.
Constructed from strong 2618 alloy forgings for enhanced durability.
Features cam and barrel skirt profiles to reduce cylinder wall wear and improve power.
Precisely machined ring lands and grooves ensure an improved piston 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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Will this fit your vehicle?

About this part

Product Details

If you're rebuilding a high-performance 4G63T engine for your 2003-2006 Mitsubishi Lancer Evolution, or even a 1993-1999 Eclipse or Talon, these Manley 87.0mm +2.0mm over bore flat-top pistons are a solid choice. They're designed to handle the demands of serious engine builds, offering a 10.0:1 or 10.5:1 compression ratio depending on your cylinder head setup.

Manley uses their signature 2618 alloy forgings for these pistons, which are known for being strong and reliable under high stress. They also feature proven cam and barrel skirt profiles that help reduce friction and wear on your cylinder walls, while still allowing the engine to make good power. The ring lands and grooves are machined to very strict standards, which is crucial for getting a good seal from your piston rings and maximizing the power output of your engine. Plus, they come with premium chrome moly wrist pins for added durability.

These pistons are a direct fit for the specified Mitsubishi and Eagle models, and they come with everything you need to get them installed, including the piston rings. Professional engine builders often choose Manley because they trust the consistent quality and performance these pistons offer, making them a popular option for builds aiming for significant power gains.