To be operational, it requires ski adapters and wheels (not included)

Main system foot operated that allows the wheels to be lowered and locked. Sold in pairs, the Rouski EVO system is compatible with most snowmobile models. 

The Rouski EVO is also sold as a complete kit.

The Rouski EVO is a retractable wheel system for snowmobiles that improves your off snow riding experience. Efficient to protect your runners and make your travel easier, the Rouski EVO features an easier-to-engage system, which is compact, lockable, and better integrated. Designed in two parts, the universal Rouski EVO system combines with specific adapters for different ski models.