Wiseco K627M8625 1400HD Forged Piston Kit for Mitsubishi 4G63 Evo 8 Turbo 86.25mm -21cc

The Wiseco K627M8625 is a high-performance forged piston kit engineered for the Mitsubishi 4G63 turbocharged engine found in the Lancer Evolution 8. Part of Wiseco's 1400HD (Heavy Duty) Sport Compact series, this kit is purpose-built to handle the extreme cylinder pressures generated by forced induction builds, delivering the durability and consistency that serious performance engines demand.

Each piston features a -21cc dish/dome volume optimized for turbocharged compression ratios and is manufactured from dedicated in-house forgings using high-strength aerospace-grade aluminum alloy. Wiseco's proprietary Armor Plating coating raises the hardness of the aluminum, increases ring groove durability, prevents micro-welding of piston rings, reduces carbon buildup, and combats corrosion from detonation events.

Key Features:

• 86.25mm bore diameter — fits standard oversize bore applications
• -21cc dome volume — optimized for turbocharged compression ratios
• 1400HD series — heavy-duty design rated for high-boost turbo applications
• Armor Plating coating on piston crown and wrist pin bore for increased hardness and durability
• ArmorGlide® anti-friction skirt coating — reduces friction and noise, freeing up horsepower
• Specially designed valve pockets for the 4G63 DOHC 16-valve head
• Steel nitride/Napier XX ring package included for superior sealing
• Optimized skirt profile for stability and reduced cylinder wall friction
• Complete kit includes: 4 forged pistons, rings, wrist pins, and locks
• 100mm stroke compatible (2.3L stroker builds supported)
• 22mm wrist pin diameter

Wiseco pistons are manufactured using the latest 3D design techniques and finite element modeling to ensure maximum strength and minimum weight for each specific application. The K627M8625 is an ideal choice for high-boost 4G63 Evo 8 builds seeking a proven, race-tested forged piston solution.