Wiseco K667M8525 Forged Piston Kit Mitsubishi 4G63 85.25mm Bore

The Wiseco K667M8525 is a complete forged piston kit designed for the Mitsubishi 4G63 turbocharged engine, as found in the Mitsubishi Lancer Evolution (1996–2007) and related DSM/Eclipse applications. Wiseco's forged aluminum construction delivers exceptional strength and thermal efficiency compared to cast OEM pistons, making this kit a popular upgrade for high-performance street and competition builds.

Key Features:

• Bore Size: 85.25mm — a popular oversize for engines requiring a fresh bore or seeking a slight displacement increase
• Forged Aluminum Construction: Wiseco's proprietary forging process produces a denser, stronger piston that withstands elevated cylinder pressures from forced induction
• ArmorGlide Skirt Coating: Reduces friction and wear between the piston skirt and cylinder wall for improved longevity and efficiency
• Ring Grooves: Precision-machined to accept standard ring sets; compatible with Wiseco ring packages for a complete rebuild
• Wrist Pin Included: Full-floating wrist pin design included in the kit for easy installation
• High Strength-to-Weight Ratio: Forged billet construction keeps reciprocating mass low while maximizing tensile strength under boost
• Compatible with 4G63 Turbo Platforms: Engineered for Mitsubishi Lancer Evolution I through IX and related DSM turbo applications (1996–2007)

Wiseco is an industry-leading manufacturer of forged performance pistons trusted by professional engine builders worldwide. The K667M8525 kit is an ideal solution for 4G63 engine rebuilds targeting increased power output, higher boost levels, or simple restoration to factory-tight tolerances with improved reliability over OEM components.