Replacement Part Number: 9.110.018 - 9.100.018-725. Before ordering, please check the details to make sure this part will fit. Compatibility and fit - Fits Hammerhead 80T and TrailMaster Mid XRX Mud Head Go Karts with a 6.5 hp engine. - 725 Torque Converter Asymmetrical Drive Belt. - Also used on many kits, including Trailmaster and Hammerhead Mid Karts. - Driver and driven pulley must be between 6 5/8 inch and 6 11/16 inch. Benefits and features - Replaces a belt that becomes loose or breaks due to wear. - Wear resistant and corrosion resistant construction. - More affordable than OEM belts while delivering original high quality. - 100% brand new and 100% tested before leaving the factory. High performance and material - 725 Torque Converter Asymmetrical Drive Belt made of excellent quality rubber. - Sturdy and durable in use. - Designed for wear resistance and corrosion resistance. Use scenarios - Replacing a worn or broken belt on Hammerhead 80T or TrailMaster Mid XRX Mud Head Go Karts with a 6.5 hp engine. - Servicing kits that require a 725 torque converter asymmetrical drive belt, including Trailmaster and Hammerhead Mid Karts. - Using as a replacement belt across various kits that utilize this belt size and configuration.