Wiseco K627M86AP Sport Compact Forged Piston Kit Bore - 4G63 86mm

The Wiseco K627M86AP is a high-performance forged piston kit designed for Mitsubishi 4G63 engines with a 100mm stroker crankshaft, specifically engineered for second generation 7-bolt applications including Evo 1-9 and Eclipse/Talon DSM vehicles. This complete piston and ring kit delivers stronger pistons with tighter tolerances than stock, featuring Wiseco's advanced forging process and extensive heat-treating and finishing processes to ensure maximum performance and reliability.

Key Specifications:

• Bore: 86.00mm (3.386 inches)
• Compression height: 28.87mm (1.137 inches)
• Stroke: 100mm (3.937 inches) stroker application
• Rod length: 150mm (5.906 inches)
• Dome volume: -21cc dish
• Compression ratio: 9.2:1
• Includes .225 inch wall tool steel wrist pins
• Pin diameter: 22mm (.866 inches)
• Average piston weight: 305 grams

Advanced Features:

• Anti-friction skirt coating minimizes scuffing during break-in and reduces friction on the cylinder wall
• Textured top face improves combustion characteristics
• Armor Plating coating raises aluminum hardness, increases ring groove durability, prevents micro-welding of piston rings, reduces carbon buildup, and combats detonation-related corrosion
• Crown thickness and ring lands designed for power-adders including turbos, blowers, and nitrous oxide
• Complete kit includes high-quality piston rings

These American-made pistons are forged and machined by skilled Ohio craftsmen using state-of-the-art forging presses and CNC machines, with dedicated forgings specific to the final piston shape for superior strength and lighter weight compared to industry standards. Ideal for building a stroker 2.3L displacement from the 4G63 platform.