Wiseco SK1392 Snow Piston Top End Kit Standard Bore 98mm 12.5:1 Arctic Cat

The Wiseco SK1392 is a complete top end piston kit engineered specifically for Arctic Cat snowmobiles, featuring a standard 98.00mm bore and 12.5:1 compression ratio for high-performance and racing applications. Designed and manufactured entirely in the USA, this kit delivers the durability and precision that snocross and cross-country racing demand.

At the core of this kit is a Pro-Lite forged piston CNC machined to an optimized cam shape and profile, delivering peak horsepower and extended service life. Wiseco forges all pistons in-house using aerospace-grade aluminum alloy, controlling every step of the manufacturing process from raw bar stock to finished skirt-coated parts. This vertical integration allows for tighter tolerances, consistent quality, and rapid development of race-proven designs.

Why Forged Over Cast?

• Forged pistons feature a condensed, aligned grain structure that produces superior mechanical properties
• Greater resistance to impact, fatigue, and catastrophic failure under high stress
• Optimized strength-to-weight ratio for maximum performance without added mass
• Proven by top race teams in snocross and cross-country competition

Kit Includes:

• Forged Pro-Lite piston (98.00mm standard bore)
• High-performance piston ring set
• Alloy wrist pin
• Circlips
• Top-end gasket kit

Wiseco's in-house dyno testing and R&D capabilities ensure that every SK1392 kit reflects the latest advances in piston technology—including optimized skirt coatings and ring profiles—making it the go-to choice for riders who refuse to compromise on engine performance.