Wiseco SK1222 Forged Piston Kit for Ski-Doo - 77.50mm 2-Stroke 582/583

The Wiseco SK1222 is a complete 2-stroke forged piston kit engineered specifically for Ski-Doo 582 and 583 engine types. Featuring a 77.50mm bore (1.50mm oversize), this kit is designed for top-end rebuilds and overbore applications demanding strength, durability, and consistent performance.

Wiseco pistons are engineered, forged, and machined in the USA at their Mentor, Ohio facility. Unlike cast pistons, Wiseco's forged construction produces a condensed grain structure aligned to the features of the part, delivering higher mechanical properties, superior resistance to impact, and greater fatigue life. This makes them the preferred choice for high-performance snowmobile applications where reliability under extreme conditions is non-negotiable.

Kit Contents:

• Forged piston(s) — 77.50mm bore diameter
• Piston ring(s)
• Wrist pin(s)
• Circlips

Key Features:

• Forged aerospace-grade alloy for improved tensile strength and service life over cast alternatives
• Dedicated forging design with optimized strength-to-weight ratio for maximum performance
• USA engineered and manufactured — Wiseco controls every step from raw material to finished part
• Pro-Lite design with enhanced heat transfer geometry
• 1.50mm oversize — cross-reference part number 2376M07750 / 3051LT
• Designed for cast iron bore cylinders

Wiseco's in-house dyno testing and vertically integrated manufacturing process — from forge tooling through skirt coating — ensures each piston meets rigorous performance and dimensional standards. The SK1222 is the right choice for a complete, confidence-inspiring top-end rebuild on your Ski-Doo 582/583-powered snowmobile.