What is the advantage of using forged pistons like these?

Forged pistons, like these made from 2618 alloy, are significantly stronger and more durable than cast pistons. This makes them ideal for high-performance engines that experience higher cylinder pressures and temperatures.

What does the '+0.5mm Over Size' mean for the bore size?

This means the pistons are 0.5mm larger in diameter than the original factory pistons. This size is typically used when cylinder walls have been honed to remove wear or to achieve a specific clearance for a performance build.

Are any special tools or procedures needed for installing these pistons?

Installation of performance pistons requires precise measurements and careful attention to detail. Always refer to Manley's official installation instructions or consult a professional engine builder for proper ring gapping, piston-to-wall clearance, and assembly procedures.

Specifications

Brand: Manley Performance
Part #: 619205CE-4
UPC: 807298091334

Manley 03-06 EVO VIII/IX 85.5mm Bore +0.5mm Over Size 10.5 CR Dish Extreme Duty Piston Set w/ Rings

Name: Manley 03-06 EVO VIII/IX 85.5mm Bore +0.5mm Over Size 10.5 CR Dish Extreme Duty Piston Set w/ Rings
Brand: Manley Performance
SKU: manley-performance-manley-03-06-evo-viii-ix-85-5mm-bore-0-5mm-over-size-10-5-cr--t14-4398486
Price: 893.77 USD
Availability: BackOrder

$893.77

On Backorder

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Manley 03-06 EVO VIII/IX 85.5mm Bore +0.5mm Over Size 10.5 CR Dish Extreme Duty Piston Set w/ Rings. Forged from 2618 alloy for superior strength in high-performance builds.

Key Features

Fits 2003-2006 Mitsubishi Lancer Evolution VIII and IX.
Forged from 2618 alloy for superior strength and performance.
85.5mm bore size, which is 0.5mm over standard.
10.5:1 compression ratio with a dish top.
Includes premium chrome moly wrist pins.
Features cam and barrel skirt profiles for reduced wear and improved power.

This piston set is specifically designed for the 2003-2006 Mitsubishi Lancer Evolution VIII and IX models. Not CARB approved and cannot ship to California.

⚠️ 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

When you're rebuilding the engine in your 2003-2006 Mitsubishi Lancer Evolution VIII or IX for serious performance, a strong set of pistons is fundamental. This set from Manley Performance is built to handle the demands of a high-output 4-cylinder engine, featuring a bore size of 85.5mm, which is 0.5mm over the standard size, and a 10.5:1 compression ratio with a dish top. These pistons are designed to be a robust foundation for your engine build.

Manley uses their signature 2618 alloy forgings, known for their exceptional strength and durability, which is crucial when you're pushing an engine hard. They come with premium chrome moly wrist pins, and Manley's exacting standards for ring lands and grooves help ensure a solid seal for improved power. The cam and barrel skirt profiles are carefully shaped to reduce friction and wear on the cylinder walls while still generating substantial power. Manley's unique manufacturing process ensures the ring grooves are perfectly square to the skirt, contributing to overall engine efficiency and longevity.

This piston set includes rings and is designed for extreme duty applications. Please note that these pistons are not CARB approved and cannot be shipped to California. It's always a good idea to consult your engine builder or refer to Manley's installation guidelines for specific details regarding assembly and break-in procedures for your build.