Wiseco SK1241 Top End Kit Ski-Doo Mach Z Forged Piston Kit (2434M07050-2776CD)

The Wiseco SK1241 is a complete top end kit engineered specifically for the Ski-Doo Mach Z snowmobile. Wiseco has spent decades developing forged snowmobile pistons in the USA, purpose-built for the demands of snocross and cross-country racing. Every piston in this kit is forged entirely in-house, using proprietary tooling manufactured at Wiseco's own facility — ensuring full quality control from raw bar stock to finished skirt-coated components.

Why Forged Over Cast?

Unlike cast pistons, Wiseco forgings feature a condensed, directionally aligned grain structure that delivers superior mechanical properties, fatigue resistance, and impact toughness. Cast pistons are inherently more brittle and tend to fail suddenly when material yield limits are exceeded. Wiseco's forged pistons are engineered to optimize the strength-to-weight ratio — providing the durability that high-performance and racing applications demand without unnecessary mass.

Key Features:

• Forged in the USA — all pistons and forge tooling produced in-house for consistent quality
• Skirt coating — factory-applied coating reduces friction and improves break-in characteristics
• Top end kit — includes piston(s), rings, pin, and circlips as a complete assembly
• Part cross-reference: 2434M07050 / 2776CD
• 70.50mm bore — precision-sized for direct OEM replacement or rebuild
• Dyno-developed — refined through in-house dynamometer testing for maximum performance gains
• Superior impact and fatigue resistance versus OEM cast alternatives
• Optimized strength-to-weight ratio for high-revving two-stroke snowmobile engines

Wiseco's vertically integrated manufacturing process — spanning design, testing, production, and distribution — allows them to bring industry-leading piston technology to market quickly. The SK1241 kit is the ideal choice for engine rebuilds, performance upgrades, or race-prep on the Ski-Doo Mach Z platform.