Introducing the most powerful belt built for the most extreme machines Daycos revolutionary new ATV belts are engineered for those monster machines powered by 800cc and above engines. Specially-formulated high temperature Neoprene with the highest level of Aramid fiber loading 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. The Dayco XTX belt offers: 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 RPMs Cooler running than the leading competitors This race-tested Dayco XTX belt gives extreme riders the best out-of-the-hole acceleration, throttle response and durability, for the ride of a lifetimeevery time! Fits: Polaris ACE 325 2015-2016 ACE 325 HD 2016 RANGER 900 XP FULL SIZE 2013-2014 RANGER CREW 900 2015-2017 RANGER XP 900 EPS FULL SIZE 2015-2018 RZR XP 1000 2014 SPORTSMAN ACE 570 2014-2017