What is the bore size and compression ratio effect of these pistons?

These pistons have a bore size of 86.5mm, which is 1.5mm over the stock bore. They also feature a -12cc dish, which will lower the compression ratio compared to flat-top or domed pistons without a dish.

What is included with these Manley pistons?

This set includes the forged pistons, piston rings, and chrome moly wrist pins. It is a complete package for replacing your stock pistons.

Are these pistons suitable for all 4G63T engines?

These pistons are specifically designed for the 7-bolt 4G63T engine found in the 2003-2006 Mitsubishi Lancer Evolution 8 and 9 models. They are not intended for other variants of the 4G63T engine.

Specifications

Brand: Manley Performance
Part #: 606015CE-4
UPC: 807298088747

Manley 03-06 Evo 8/9 (7 Bolt 4G63T) 86.5mm +1.5mm 8.5/9.0 -12cc Dome Extreme Duty Pistons w/ Rings

Name: Manley 03-06 Evo 8/9 (7 Bolt 4G63T) 86.5mm +1.5mm 8.5/9.0 -12cc Dome Extreme Duty Pistons w/ Rings
Brand: Manley Performance
SKU: manley-performance-manley-03-06-evo-8-9-7-bolt-4g63t-86-5mm-1-5mm-8-5-9-0-12cc-d-t14-4359384
Price: 893.77 USD
Availability: BackOrder

$893.77

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Manley 03-06 Evo 8/9 (7 Bolt 4G63T) 86.5mm +1.5mm 8.5/9.0 -12cc Dome Extreme Duty Pistons w/ Rings. Forged 2618 alloy construction for superior strength.

Key Features

Fits 2003-2006 Mitsubishi Lancer Evolution 8/9 (7 Bolt 4G63T).
86.5mm bore size (+1.5mm over stock) with a -12cc dish.
Constructed from domestic 2618 alloy forgings for superior strength and performance.
Features proven cam and barrel skirt profiles for reduced cylinder wall wear and power generation.
Exacting standards for piston ring lands and grooves ensure enhanced ring seal and more power.
Includes premium chrome moly wrist pins for added durability.

This piston set is specifically designed for the 2003-2006 Mitsubishi Lancer Evolution 8 and 9 models equipped with the 7-bolt 4G63T engine.

⚠️ 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 building a high-performance 2003-2006 Mitsubishi Lancer Evolution 8 or 9 with the 7-bolt 4G63T engine, these Manley Extreme Duty pistons are a solid choice. They are designed to handle serious power and are a popular pick among professional engine builders and tuners who demand reliability under extreme conditions. These pistons are 86.5mm in bore size, which is +1.5mm over stock, and feature a -12cc dish to help achieve your desired compression ratio.

Manley uses their signature 2618 alloy forgings for these pistons, which offers superior strength and durability compared to cast aluminum. They also feature proven cam and barrel skirt profiles that help reduce friction and wear on your cylinder walls while still generating substantial power. The ring lands and grooves are machined to exacting standards, which is crucial for achieving a better ring seal and maximizing power output. Each set includes premium chrome moly wrist pins, known for their strength, and the pistons come with a moly skirt coating for added protection and reduced friction.

This set includes the pistons, rings, and wrist pins, making it a comprehensive solution for your engine build. Keep in mind 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.