Wiseco SK1095 Snowmobile Forged Piston Kit - 73.50mm 2-Stroke

The Wiseco SK1095 is a complete 2-stroke forged piston kit designed for Yamaha snowmobile top-end rebuilds and overbore applications. Featuring a 73.50mm bore diameter and engineered for a 577cc displacement engine, this kit delivers everything needed for a full top-end rebuild in a single package.

What's Included:

• Forged piston
• Piston rings
• Wrist pin
• Circlips
• Top-end gasket set

Why Forged Over Cast:

• Superior strength — Forgings feature condensed, aligned grain structure that produces higher mechanical properties and resistance to impact and fatigue
• Tougher under load — Unlike cast pistons, which are brittle and prone to catastrophic failure when yield strength is exceeded, forged pistons absorb abuse in high-performance applications
• Optimized strength-to-weight ratio — Each forging is engineered to minimize mass without sacrificing durability
• Skirt coating — Factory-applied skirt coating reduces friction and wear for longer service life

American-Made Quality:

• Engineered, forged, and machined in the USA in Mentor, OH
• Wiseco is the only aftermarket piston manufacturer to forge all pistons entirely in-house, maintaining full control from raw bar stock to finished skirt-coated parts
• In-house dyno testing drives continuous development of advanced piston shapes, coatings, and components
• Developed specifically for snocross and cross-country racing demands

The Wiseco SK1095 is the go-to choice for snowmobile builders seeking race-proven reliability and performance in a complete, ready-to-install top-end kit.