Rotax ACE 900 and 600 engines from Ski-Doo

To learn more and build your 2015 Ski-Doo snowmobile: http://www.ski-doo.com It would be enough that Rotax ACE engines deliver best-in-class fuel efficiency, super smooth operation and very low maintenance. But we didn't stop: • Intelligent Throttle Control (iTC) enables you to choose one of three performance driving modes at the touch of a button: Sport, Standard and ECO. • The Learning Key limits speeds for novice riders. • New for 2015 is the ability to operate the throttle with your finger or thumb -- and change from one to the other without tools. • Those innovations are on top of the ACE engines are known for.