Wiseco K674M855 Mitsubishi 4G63 7-Bolt Piston Kit 85.5mm -12cc Dish 8.5:1 CR

The Wiseco K674M855 is a forged piston kit designed for the Mitsubishi 4G63 7-bolt engine, offering a reliable performance upgrade for enthusiasts building or rebuilding this iconic turbocharged powerplant. With an 85.5mm bore diameter, a -12cc dish design, and a compression ratio of 8.5:1, this kit is well-suited for high-boost forced induction applications where a lower static compression ratio is essential for reliability and power.

Key Features:

• Application: Mitsubishi 4G63 7-bolt engine
• Bore Size: 85.5mm
• Dish Volume: -12cc dish top for reduced compression
• Compression Ratio: 8.5:1 — ideal for high-boost turbo builds
• Construction: Forged aluminum alloy for superior strength and heat resistance
• Wiseco ArmorGlide Skirt Coating: Reduces friction and wear for extended piston life
• Premium rings and wrist pins included as part of the complete piston kit
• Tight tolerances: CNC-machined to Wiseco's performance specifications

Wiseco is a trusted name in performance forged pistons, with decades of experience supplying the motorsport and racing communities. The K674M855 is engineered to withstand the demands of turbocharged and high-performance street or track use, making it a popular choice for DSM and Mitsubishi Eclipse/Talon/Galant VR-4 engine builds. Each piston is precision-manufactured in the USA to ensure consistent quality and fitment.