2012 Sea Doo RXP-X RXT-X GTR Staff The next generation 2012 Sea-Doo RXP-X is joined by the new Sea-Doo GTR 215 and GTX 155 S. Handling enhancing components for the RXT-X and RXT-X aS models are also new in 2012. The 2012 Sea-Doo WAKE 155 and WAKE Pro 215 models feature new colorization and have received a system upgrade with intelligent Throttle Control (iTC ) and an exclusive Ski mode now directly linked to a GPS control system for 100% pulling speed accuracy.