Built for the most extreme machines, Dayco XTX ATV and UTV belts are engineered for machines powered by 800cc and above engines. Engineered with specially-formulated, 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 cogs on top and rounded cogs on the bottom for ultimate flexibility and longer belt life while being a better alternative to the original equipment belt. Faster and more consistent throttle response at high speeds. Quicker throttle response at mid-speed acceleration. Greater secondary acceleration at high RPMs. Reduction in slippage during the highest levels of torque. Increased horsepower capacity. Better performance during deceleration (more responsive engine braking). Tested and proven reliable at well over 12,000 RPM.