Wiseco K636M88 Forged Piston Kit Bore Mitsubishi - 88mm 9.6 1 4B11T

Wiseco's Sport Compact Pro Tru line delivers dedicated forgings produced in-house, resulting in a lightweight piston with superior strength and an optimized design that outperforms cast alternatives. ArmorGlide® skirt coating is applied as standard to minimize friction, reduce scuffing during break-in, and free up horsepower. The textured piston crown improves combustion characteristics, while specially designed valve pockets allow maximum flow and accommodate oversized valves and high-lift camshafts.

Key Specifications:

• Bore: 88.00mm (3.464")
• Stroke: 86mm (3.386")
• Compression Ratio: 9.6:1
• Compression Height: 33.25mm (1.309")
• Rod Length: 143.75mm (5.659")
• Dome Volume: -4.5cc (Dish)
• Wrist Pin Diameter: 23mm
• Over-Size: +2.0mm over stock bore

Key Features:

• Forged 2618 aerospace-grade aluminum for superior strength-to-weight ratio
• ArmorGlide® skirt coating reduces friction and piston rock
• Specially designed valve pockets support oversized valves and aggressive cam profiles
• Offset wrist pin design mirrors OEM configuration for quiet, smooth operation
• Crown thickness and ring lands engineered for power-adders including turbos, superchargers, and nitrous
• Precision-machined ring grooves for maximum ring seal and minimal blow-by
• Engineered and manufactured in the USA

Kit Includes:

• (4) Forged Pistons
• (4) Wrist Pins
• (8) Wire Locks / Circlips
• (4) Sets of Piston Rings

The K636M88 is built to handle the demands of high-boost turbocharged applications, making it the go-to forged piston solution for engine builders targeting serious power levels on the Mitsubishi 4B11T platform.