Wiseco K674M8625 Forged Piston Kit Mitsubishi Dish - 4G63 7-Bolt 86.25mm 12cc 8.5 1

The Wiseco K674M8625 is a Professional Series forged piston kit designed for the Mitsubishi 4G63 7-bolt engine. Featuring an 86.25mm bore, a -12cc dish combustion chamber volume, and a 8.5:1 compression ratio, this kit is engineered to deliver reliable power in high-performance and turbocharged builds where a lower compression ratio is preferred for increased boost headroom.

Wiseco's Professional Series pistons are no-compromise components built for serious engine builders and racers. Each piston is engineered, forged, and machined in the USA from 2618 aluminum alloy, which offers superior tensile strength and excellent fatigue resistance under the extreme thermal and mechanical stresses of forced-induction applications.

Key Features:

• 86.25mm bore diameter for precise fitment
• -12cc dish piston design yields an 8.5:1 compression ratio — ideal for high-boost turbocharged builds
• 7-bolt 4G63 application — fits the stronger 7-bolt block used in later DSM and Mitsubishi EVO engines
• 2618 forged aluminum construction for maximum strength at elevated temperatures
• ArmorGlide® skirt coating provides seizure resistance, reduced friction, and quieter operation
• Includes premium ring set with gas-nitrided top ring optimized for turbocharged use
• Includes wrist pins and locks — complete kit ready for installation
• Engineered and manufactured in the USA

Whether you're building a high-power street car or a dedicated race engine, the Wiseco K674M8625 piston kit gives the Mitsubishi 4G63 platform the forged strength and precision it demands. The lower 8.5:1 compression ratio makes this kit an excellent choice for aggressive turbo setups running elevated boost pressure.