Pro Grip 964 ATV Grips - Thumb Throttle (RED) Keep your hands in control with the Pro Grip 964 EVO dual compound grips. For use with thumb throttle, includes left and right grip. The unique design of the 964 EVO grips provides an ergonomically correct shape for your hands to offer comfort during your grueling rides. Pro Grip uses a hard compound on the interior of the 964 EVO grips to keep them firmly in place on your handlebars. A softer compound on the outside of the 964 EVO grips provide all-day riding comfort.