Gates Drive Belt 2010-2013 Polaris Ranger RZR 800 S G-Force C12 Carbon Fiber CVT OEM Upgrade Heavy Patented carbon-fiber tensile cords and Kevlar loaded high-temperature rubber provide exceptional belt stability and excellent sidewall friction characteristics. Carbon-fiber tensile cords are 25-30% stronger than Kevlar cords, providing extreme horsepower and drive-torque handling capability for 800cc and larger engines. Carbon fibers stretch 60% less than Kevlar fibers at the same load conditions, enabling faster acceleration and more consistent CVT shift performance. Trapezoidal top-notch and rounded bottom-cog belt designs increase belt flexibility and cooling, with smooth pulley intake and out-feed for smoother overall CVT operation. Patented designs and materials create a belt with outstanding operating life with dramatically reduce sidewall cord pull-out.