Dayco Snowmobile HPX High Performance Extreme Drive Belt - Moto-Sk Mirage/Sonic / Ski-Doo Alpine/Blizzard/Cheyenne/Escapade/Formula/Grand Touring/Mountain/Nordik/Safari/Skandic /Stratos (See Specifications) - HPX5007 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