What is the compression ratio of these pistons?

These Manley pistons feature a dish design with a compression ratio of 10.0:1 to 10.5:1. This is a common range for performance builds, offering a good balance of power and reliability.

Are these pistons a direct replacement for my stock pistons?

No, these pistons are +.5mm oversize. This means they are larger than stock and require machining of the cylinder block to fit properly. Always consult with a qualified engine builder for installation.

What comes included with this piston set?

This set includes the four pistons and the necessary rings for installation. Wrist pins are also included as standard with these pistons.

Specifications

Brand: Manley Performance
Part #: 618205C-4
UPC: 807298074849

Manley 03-06 Evo VII/IX 4G63T 85.5mm +.5mm Oversize Bore 10.0/10.5:1 Dish Piston Set with Rings

Name: Manley 03-06 Evo VII/IX 4G63T 85.5mm +.5mm Oversize Bore 10.0/10.5:1 Dish Piston Set with Rings
Brand: Manley Performance
SKU: manley-performance-manley-03-06-evo-vii-ix-4g63t-85-5mm-5mm-oversize-bore-10-0-1-t14-259509
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 piston set with rings, +.5mm oversize bore and 10.0/10.5:1 dish for improved performance.

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 +.5mm oversize bore for engine rebuilding.
Dish piston design with a 10.0/10.5:1 compression ratio.
Includes premium chrome moly wrist pins.
Proven cam and barrel skirt profiles help reduce cylinder wall wear.

⚠️ 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 engine in your 1993-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, or 2003-2006 Mitsubishi Lancer, a strong set of pistons is crucial. This set from Manley Performance is built for serious engine work, featuring a +.5mm oversize bore and a 10.0/10.5:1 compression ratio dish. These pistons are designed to handle the demands of performance builds, offering a solid foundation for your engine project.

Manley uses domestic 2618 alloy forgings for these pistons, which are known for their strength and ability to perform under pressure. They come with premium chrome moly wrist pins, and the piston skirts have proven cam and barrel profiles to help reduce wear on the cylinder walls while still generating power. Manley also pays close attention to the ring lands and grooves, ensuring a tight seal for better combustion efficiency. The unique manufacturing process ensures the ring grooves are perfectly square to the piston skirt, which is important for consistent sealing and performance.

This set includes the pistons and rings, ready for installation. 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, especially when dealing with oversize pistons and specific engine builds.