Type: XTX Outside Circumference: 37.12" Top Width: 1.29" Serial Number: 212028Built for the most extreme machines, DAYCO XTX ATV and UTV belts are designed for machines powered by 800cc and above engines. Engineered from quality, high temperature polychloroprene with the highest level of aramid fiber reinforcement available delivers track-churning performance for the most aggressive riders. This innovative break-through design features deeper gears on the top and rounded gears on the bottom for maximum flexibility and longer belt life while being a superior alternative to the original equipment belt. The Dayco XTX ATV belt delivers:Faster, more consistent throttle response at high speedsQuicker throttle response in mid-speed accelerationGreater secondary acceleration at high RPMsReduced slippage during higher torque levelsIncreased power capabilityBetter braking performance during deceleration (more engine responsiveness)Proven and reliable at well over 12,000 RPMCooler running than leading competitors This race-tested Dayco XTX Extreme Riders belt provides the best out-of-the-hole acceleration, throttle response and durability, for the ride of a lifetime, every time. See the chart to find your model.