Wiseco K667M87 Forged Piston Kit Mitsubishi 4G63 EVO 87mm Bore -19.8cc Dish

The Wiseco K667M87 is a Professional Series forged piston and ring kit engineered for the Mitsubishi 4G63 engine found in the Lancer Evolution (Evo 1–9). Featuring Wiseco's all-new Asymmetrical Skirt / HD2 Forging design, this kit is purpose-built for 100mm stroker crankshafts paired with 150mm connecting rods, making it an ideal choice for serious performance builds and high-output turbocharged applications.

Key Features:

• 87.00mm Bore with a -19.8cc dish crown profile
• Asymmetrical Skirt design for reduced friction and optimized piston motion
• HD2 Forging from 2618 aluminum alloy for superior tensile strength and thermal fatigue resistance
• ArmorGlide® Skirt Coating — seizure-resistant, friction-reducing permanent coating for quieter operation and increased horsepower
• Gas Nitrided Top Ring designed to withstand the demands of high-boost turbocharged engines
• Napier 2nd Ring for excellent oil control
• Heavy-duty tool steel wrist pins included
• Matching piston ring set included
• Engineered, forged, and machined in the USA

Wiseco's Professional Series pistons are no-compromise components built for heavy-duty and severe-duty race applications. Packed with custom-level performance features and supplied with premium rings, the K667M87 delivers the reliability and strength demanded by high-horsepower 4G63 builds on pump gas, race fuel, or boost.