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The best drive belt for your Polaris Sportsman 850XP. Better than OEM. Approx. $72 on Amazon.

Fits '09 and newer Polaris 550, 850cc models
replaces Polaris OEM #: 3211123
Length: 39.500 inch Width: 1.240 inch


DAYCO® XTX™ ATV Belt
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, the Dayco XTX belt 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.

The Dayco XTX ATV 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 lifetime—every time!
 
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