Plastic wheels with a rubber band, sold in pairs, to complete the Rouski EVO system and the ski adapter. Available in two diameters: 136 mm and 143 mm. * Note that if substitute product 298878 is used, the inserts on the bearing must be removed prior the installation. The Rouski EVO is sold as a complete kit. 472102- BRP Pilot X 472103- Yamaha Stryke 472104- Polaris ProSteer 472105- Arctic Cat AC6 472106- BRP Pilot 7.4 472107- BRP Pilot TX 472108- BRP Pilot 5.7 472109- BRP Pilot TS 472110- BRP Pilot DS2/DS3 (143 mm) 472111- BRP Pilot DS 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.