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 RANGER 800 2012 RANGER 800 EFI 4x4 2010-2011 RANGER 800 FULL SIZE 6X6 2010-2018 RANGER CREW 800 2010-2012 RANGER XP 800 2012-2013 RZR 4 800 2011-2012 RZR 800 2012 RZR S 800 2011-2012