Wiseco SK1302 78mm 2-Stroke Snowmobile Piston Kit for Ski-Doo 700

The Wiseco SK1302 is a precision-engineered 2-stroke forged piston kit designed for Ski-Doo 700cc liquid-cooled snowmobile engines. Built to a standard bore size of 78.00mm, this Pro-Lite series kit delivers the strength and reliability demanded by serious snowmobile riders and racers.

What's Included:

• Precision matched and balanced forged piston(s)
• High-performance piston rings
• Taper wall wrist pin(s)
• Circlips
• Top end gasket kit

Key Features:

• Forged from high-silicon, low-expansion aerospace-grade aluminum for superior strength and reduced weight
• Forging process aligns grain structure to part geometry, improving impact resistance, fatigue resistance, and overall mechanical properties
• All pistons are forged and tooled entirely in-house in the USA, giving Wiseco full control from raw material to finished skirt-coated part
• Designs validated through in-house dyno testing and 3D finite element modeling for optimal strength-to-weight ratio
• Race-proven construction chosen by top snocross and cross-country race teams
• Compatible with cast iron lined cylinders; cylinder bore must be bored and/or honed to size before installation
• Oversize pistons also available for resleeved chrome, Nikasil, and boron composite cylinders

The Wiseco SK1302 piston kit provides everything needed for a complete top-end rebuild in a single purchase. Unlike cast pistons, Wiseco forgings feature condensed, directionally aligned grain structure that resists catastrophic failure under high-stress racing and performance conditions — making them the preferred choice for high-output Ski-Doo 700 engines.