What is the compression ratio of these pistons?

These Manley Performance pistons feature a dish top with a compression ratio ranging from 10.0:1 to 10.5:1. This is a common choice for many performance engine builds.

What is the significance of the 86.5mm bore and +1.5mm oversize designation?

The 86.5mm bore is the diameter of the piston itself. The '+1.5mm oversize' indicates that these pistons are intended for engines that have been machined (bored out) to be 1.5mm larger than their original cylinder bore size.

Are these pistons suitable for all engine builds?

These pistons are built with high-strength 2618 alloy forgings and are designed for performance applications. However, they are not CARB approved and cannot be shipped to California. Always consult with your engine builder to ensure they are the right choice for your specific build goals.

Specifications

Brand: Manley Performance
Part #: 619215C-4
UPC: 807298075020

Manley 03-06 EVO VIII/IX 86.5mm-Bore +1.5mm Over Size-10.0/10.5 CR Dish Piston Set with Rings

Name: Manley 03-06 EVO VIII/IX 86.5mm-Bore +1.5mm Over Size-10.0/10.5 CR Dish Piston Set with Rings
Brand: Manley Performance
SKU: manley-performance-manley-03-06-evo-viii-ix-86-5mm-bore-1-5mm-over-size-10-0-10--t14-4320391
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.

Manley Performance forged piston set for 1993-1999 Mitsubishi Eclipse and 2003-2006 Lancer. These 86.5mm bore pistons are 1.5mm oversize and feature a 10.0/10.5 CR dish.

Key Features

This piston set fits a range of vehicles including the 1993-1999 Mitsubishi Eclipse, 2003-2006 Mitsubishi Lancer, and 1995-1999 Mitsubishi Galant.
Constructed from domestic 2618 alloy forgings for superior strength and performance.
Includes premium chrome moly wrist pins for added durability.
Features exacting standards for piston ring lands and grooves to enhance ring seal and power output.
Boasts cam and barrel (skirt) profiles designed to generate substantial power while minimizing cylinder wall wear.
Manley's unique fixturing ensures ultimate ring groove to skirt squareness for optimal performance.

⚠️ 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

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

About this part

Product Details

If you're rebuilding the engine in your 1993-1999 Mitsubishi Eclipse, 1995-1999 Galant, or 2003-2006 Lancer, this Manley Performance piston set is built for serious performance. These are forged pistons, meaning they start as a solid block of aluminum that's heated and hammered into shape, making them much stronger and more durable than cast pistons. This set is specifically for an 86.5mm bore and is 1.5mm oversize, designed to work with engines that have been bored out to accommodate them. They feature a dish top with a 10.0 to 10.5:1 compression ratio, which is a popular choice for many performance builds.

Manley uses their signature 2618 alloy forgings, which are known for their strength and ability to handle high temperatures and pressures. The pistons come with premium chrome moly wrist pins, and Manley's unique fixturing process ensures the ring lands and skirt machining are perfectly square to each other. This attention to detail helps achieve a better seal from the piston rings, which translates directly into more power. The skirt profiles are also carefully designed to reduce friction and wear on the cylinder walls, even under demanding conditions. This set includes the necessary piston rings to complete the installation.

This piston set is a solid option for anyone looking to build a high-performance engine. It's important to 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.