What is the compression ratio for this piston?

This piston features a dish shape that results in an 8.5:1 compression ratio. This is a common choice for builds looking for a balance between power and drivability.

What does the 85.5mm bore and +.5mm oversize mean?

The 85.5mm is the diameter of the piston. The +.5mm oversize indicates that this piston is intended for use in a cylinder that has been bored out by 0.5mm from its original factory size to ensure a proper fit.

Are these pistons sold individually or as a set?

These pistons are sold individually. You will need to order the correct quantity to match the number of cylinders in your engine.

Specifications

Brand: Manley Performance
Part #: 618005C-1

Manley 03-06 EVO VIII/IX 85.5mm +.5mm Oversize Bore 8.5:1 Dish Piston - Single

Name: Manley 03-06 EVO VIII/IX 85.5mm +.5mm Oversize Bore 8.5:1 Dish Piston - Single
Brand: Manley Performance
SKU: manley-performance-manley-03-06-evo-viii-ix-85-5mm-5mm-oversize-bore-8-5-1-dish--t14-581280
Price: 189.71 USD
Availability: BackOrder

$189.71

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, 85.5mm bore, 8.5:1 compression. Built for improved engine performance.

Key Features

Fits 1993-1999 Mitsubishi Eclipse, 1993-1998 Eagle Talon, 1993-1994 Plymouth Laser, and 2003-2006 Mitsubishi Lancer.
Forged from 2618 alloy for strength and performance.
Features a dish shape for an 8.5:1 compression ratio.
85.5mm bore size, which is a 0.5mm oversize.
Designed with specific cam and barrel skirt profiles for efficient operation and cylinder wall protection.
Exacting standards for ring lands and grooves help ensure a better 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, and these pistons are a prime example of that. If you're rebuilding the engine in your 1993-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, or 2003-2006 Mitsubishi Lancer, these single forged pistons are designed to handle more power than stock.

These pistons are made from 2618 alloy forgings, which is a strong material chosen for its performance capabilities. They feature a dish shape that results in an 8.5:1 compression ratio, and they are bored to 85.5mm, which is a 0.5mm oversize. Manley also pays close attention to the details, like the ring lands and grooves, to ensure a good seal for more power. The skirt profiles are designed to be effective while also being gentle on the cylinder walls, and they come with chrome moly wrist pins.

Keep in mind that these pistons are not CARB approved and cannot be shipped to California. They are sold individually, so be sure to order the correct quantity for your engine build.