The ZRT Throttle has two radial ball bearings on each end of the throttle tube, one bearing inside the throttle housing protected from the elements and one on the end of the handlebars. This gives the throttle action an ultra-smooth precision connection to the engine unlike any throttle tube on the market. Its available in Moto Version or for Woods Riders, the Bark Buster Version. The ZRT kit contains, Throttle Assembly, extra PTFE Washers, 16mm Open End wrench, Instructions and stickers. Everything you need minus the grips. Fitment 2023-2025 KTM Models SX, SXF, XC, XCF, EXC-F (125-500cc only) 2023-2025 Husqvarna Models TE, TC, FE, FC (125-501cc only) 2023-2025 Gas Gas Models EC, ES, MC, EX (125cc-500cc only)