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

These pistons have a bore size of 85.5mm, which is a 0.5mm oversize. The dish design results in a compression ratio between 8.5:1 and 9.0:1.

What material are the wrist pins made from?

This piston set includes tool steel wrist pins, which are known for their strength and durability in high-performance engine applications.

Are these pistons suitable for a stock engine rebuild?

These are forged pistons designed for performance and durability, often used in rebuilt or modified engines. They feature specific skirt profiles and exacting ring land machining to ensure good sealing and power output.

Specifications

Brand: Manley Performance
Part #: 619005C-4
UPC: 807298008622

Manley 03-06 EVO VIII/IX 85.5mm Bore-+.5mm Over Size-8.5/9.0 CR Dish Piston Set with Rings

Name: Manley 03-06 EVO VIII/IX 85.5mm Bore-+.5mm Over Size-8.5/9.0 CR Dish Piston Set with Rings
Brand: Manley Performance
SKU: manley-performance-manley-03-06-evo-viii-ix-85-5mm-bore-5mm-over-size-8-5-9-0-cr-t14-260809
Price: 758.81 USD
Availability: BackOrder

$758.81

On Backorder

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Fits 1993-1999 Mitsubishi Eclipse. Manley forged piston set with 8.5/9.0 CR dish, built for superior performance 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.
Features a dish piston design with an 8.5:1 to 9.0:1 compression ratio.
Includes tool steel wrist pins for added durability.
Machined with cam and barrel skirt profiles that balance power generation with cylinder wall protection.
Piston ring lands and grooves are held to exacting standards for enhanced 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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About this part

Product Details

Manley Performance is well-known for building strong engine components that professional builders trust. If you're working on a 1993-1999 Mitsubishi Eclipse, 1993-1998 Eagle Talon, 2003-2006 Mitsubishi Lancer, or 1993-1994 Plymouth Laser, this set of forged pistons is designed to handle serious work. These pistons have a bore size of 85.5mm, which is a +.5mm oversize, and feature a dish shape with a compression ratio of 8.5 to 9.0 to one. They are a critical part of rebuilding or upgrading your engine's core.

These pistons are made from domestic 2618 alloy forgings, a material chosen for its strength and ability to perform under demanding conditions. Manley uses proven cam and barrel skirt profiles that help generate power while also being easier on your cylinder walls. The ring lands and grooves are machined to very strict standards, which helps ensure a better seal from your piston rings, leading to more efficient power delivery. The set includes tool steel wrist pins for added durability, and the unique fixturing Manley uses allows them to machine the skirt and ring grooves in one operation. This ensures the ring grooves are perfectly square with the piston skirt, which is important for proper ring function and sealing.

This set comes complete with the necessary piston rings. 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.