Daytona 25.4mm Harley Davidson Motorcycle Stage 3 Heated Grips. Daytona Harley Davidson heated grips with 25.4mm (1 inch) handlebars The high grip of this material mixture allows a safe ride in all weather conditions. 1x Daytona Heated grips. Product Type: Heated grips. 3 steps with integrated switch in the left handle. Allows a “clean installation” with only a few cables. Cable bend protection on the grip rubbers. Closed ends of the handle. Handle length left: 134mm. Handle length right: 124mm. You can send us a message by using the “Questions and answers” section towards the bottom of the page.