What is the purpose of the dish in these pistons?

The -12.1cc dish in these pistons is designed to reduce the overall compression ratio. This is important for boosted engines, like those found in the Evo VIII/IX, to help prevent detonation and allow for more aggressive tuning.

Are these pistons suitable for high-horsepower builds?

Yes, Manley's Platinum Series pistons are built from strong 2618 alloy forgings and are a popular choice for professional engine builders working on high-performance and high-horsepower applications. They are designed for durability under demanding conditions.

What is included with this piston set?

This set includes the pistons themselves and the standard premium Chrome Moly wrist pins. Piston rings are typically sold separately, and it's recommended to consult Manley's specifications for compatible ring sets.

Specifications

Brand: Manley Performance
Part #: 606305CE-4
UPC: 807298104973

Manley Mitsubishi Evo VIII/IX 4G63/4G63T 85.5mm Bore 8.5:1 Comp Ratio -12.1cc Dish T/T Piston Set

Name: Manley Mitsubishi Evo VIII/IX 4G63/4G63T 85.5mm Bore 8.5:1 Comp Ratio -12.1cc Dish T/T Piston Set
Brand: Manley Performance
SKU: manley-performance-manley-mitsubishi-evo-viii-ix-4g63-4g63t-85-5mm-bore-8-5-1-co-t14-129693
Price: 1078.35 USD
Availability: BackOrder

$1078.35

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Manley forged piston set for Mitsubishi Evo VIII/IX 4G63/4G63T. 85.5mm bore, 8.5:1 comp ratio. Built for high performance.

Key Features

Fits Mitsubishi Evo VIII/IX with 4G63/4G63T engines.
Features an 85.5mm bore size.
Compression ratio is 8.5:1 with a -12.1cc dish.
Constructed from domestic 2618 alloy forgings for superior strength.
Includes premium Chrome Moly wrist pins.
Exacting standards for ring lands and grooves enhance ring seal.

This piston set is designed for Mitsubishi Evo VIII and IX models equipped with the 4G63 or 4G63T engine. Please verify your specific engine configuration before purchase.

⚠️ 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 their Platinum Series pistons are a prime example of that expertise. If you're rebuilding the heart of your Mitsubishi Evo VIII or IX with the 4G63 or 4G63T engine, this piston set is designed to handle serious performance demands. These pistons feature an 85.5mm bore and a 8.5:1 compression ratio with a -12.1cc dish, making them a solid choice for boosted applications where precise control over compression is key.

Crafted from domestic 2618 alloy forgings, these pistons offer exceptional strength, which is crucial for engines that see high cylinder pressures. They also come standard with premium Chrome Moly wrist pins, and for even greater durability in demanding builds, Manley offers upgrades to 9310 and Turbo Tuff/DLC alloys. The pistons are machined with exacting standards for ring lands and grooves, which helps ensure a better seal for the piston rings, leading to more efficient combustion and improved power output. Manley's unique fixturing process allows them to machine the skirt and ring grooves in one operation, ensuring they are perfectly square to each other for optimal performance.

The cam and barrel skirt profiles are carefully designed to generate substantial power while also being gentle on your cylinder walls, contributing to longer engine life. This set includes pistons with a -12.1cc dish, which is important for achieving the target 8.5:1 compression ratio with specific cylinder head volumes. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a robust engine build that demands reliable performance, Manley's Platinum Series pistons are a popular choice among professional engine builders.