2017 Sea-Doo RXT-X 300 Built for large bodies of water, rougher conditions, with the 300 horsepower Rotax 630 ACE engine and Ergolock system. Your legs lock in to the machine for added control. Experience performance riding and go from 0-60 miles per hour (0-96.6 kilometers per hour) in 3.8 seconds. - NEW 2017 SEA-DOO RXT-X 300