Change is constant, especially in an industry as demanding and fast moving as this one. Over the summer the crew at Ski-Doo made some key improvements to much of their 2019 line. Specifically, the left side panel for all Summit, Freeride, MXZ, Backcountry and most Renegade E-TEC models will feature an air-intake vent on the outside of the panel and a duct on the inside. The change will direct additional cooling to the clutches. In addition, other changes will make their way to specific models and will include a finned secondary pulley, revised clutching calibrations as well as engine mounts. The associated chart outlines the key changes by model and your local dealer will have more details.