Wiseco K560M855 Forged -10cc Piston Kit (85.50 mm) for Mitsubishi 4G63 ('8

Vehicle Fitment

• 1988-1992 Mitsubishi 4G63 2.0L 6-bolt engines
• Common applications: Eclipse 1G, Talon 1G, Galant VR-4, Lancer 4G63 models

Features

• Forged 2618-aluminum construction for maximum strength
• ArmorGlide® skirt coating reduces friction and resists scuffing
• -10 cc piston dish lowers compression for turbo or high-performance builds
• Fully machined crown with precision ring grooves
• Anti-detonation groove improves combustion stability
• Forced-pin oiling ensures lubrication under high load and RPM
• Includes high-performance ring set, wrist pins, and locks
• Designed for severe-duty and sport-compact racing applications

Specifications

• Bore: **85.50 mm**
• Compression Height: **35.00 mm**
• Piston Dish Volume: **-10 cc**
• Compression Ratio: ~9.0 : 1
• Wrist Pin Diameter: **21 mm**
• Material: Forged 2618 aluminum
• Ring Set: Included (8550XX series)
• Approx. Piston Weight: ~349 g per piston

Included Components

• 4x Forged pistons
• 4x Wrist pins
• 4x Circlip locks
• 4x Full piston ring sets (top, second, oil)
• Installation/specification guide

Product Description

The Wiseco K560M855 is a high-performance forged piston kit designed for the Mitsubishi 4G63 2.0L 6-bolt engine, used in early Eclipse, Talon, Galant VR-4, and Lancer models (1988-1992). With a -10 cc piston dish, this kit lowers compression, making it ideal for turbocharged and high-performance applications.

Constructed from 2618 aerospace-grade aluminum, these pistons offer exceptional strength and durability. The ArmorGlide® coated skirts reduce friction and improve longevity, while the forced-pin oiling system ensures reliable lubrication under high-RPM or heavy-load conditions. The fully machined crown and precision ring grooves provide consistent performance and resistance to detonation.

This kit comes complete with four pistons, wrist pins, locks, and full ring sets, providing a turnkey solution for a full rebuild. Whether you're building a turbo DSM for street, track, or race applications, the K560M855 delivers the strength, reliability, and performance serious builders demand.