EVP Bad Ass Drive Belts for Polaris ACE 900 and 570 models offer far-superior performance at a lower price point than OEM belts. For years, EVP has been working directly with GBoost Technology, a highly regarded CVT belt and clutching manufacturer, to validate many new belt compounds for SXS’s and Snowmobiles. Each compound gets subjected to an extensive durability regiment through our sponsored race program and on our own big-horsepower vehicles. Besides being more durable compared to OEM belts, Bad Ass belt compounds provide better grip, which transfers more power to the ground instead of excess belt dust. Furthermore, GBoost is one of the only manufacturers that designs belts for different uses and conditions for the same vehicle.