RXT, RXT-X, GTX, WAKE PRO (2018 and up), FISH PRO. One module that includes both Ski and X Package functions: Activates ski mode: Offers a choice of different preset acceleration curves for perfect launch every time when towing a skier or wakeboarder, plus steady tow speed. Activates X Package functions on gauge: average and top speed/RPM display unlocks launch mode control and the complete VTS range (50% more range). User-friendly interface on gauge. Simple plug-in connection. Includes hardware necessary for installation.