Parts Unlimited 09-761 Piston Kit - Rotax 69.5mm Standard Bore Snowmobile

The Parts Unlimited 09-761 Piston Kit is designed for Ski-Doo and Moto-Ski snowmobiles equipped with liquid-cooled Rotax engines featuring a standard 69.5mm (2.736") bore. This complete replacement piston assembly is engineered to deliver OEM-equivalent performance for 436cc, 462cc, 463cc, 464cc, and 467cc (Type 470) Rotax twin-cylinder engines commonly found in vintage and classic snowmobiles from the late 1970s through mid-1990s.

Key Features:

• High-performance cast aluminum piston construction closely matches original equipment specifications
• Engineered for optimal heat transfer from the combustion chamber to cylinder walls, reducing engine temperatures and improving reliability
• All individual components are fully interchangeable with OEM Rotax parts
• Complete kit includes piston, ring set, wrist pin, and circlips—everything needed for installation
• Piston weight is compatible with original factory pistons to maintain proper engine balance
• Replaces OEM part number 420993835

This piston kit fits a wide range of popular Ski-Doo models including Formula MX, Formula MX II, Formula MXZ, Formula SS, Formula SP, Safari GLX, Safari LCE, Summit 470, Grand Touring 470, and Everest series, as well as select Moto-Ski Futura and Sonic models. Perfect for engine rebuilds, performance restoration, or routine maintenance on these classic snowmobile powerplants.