- Replacement Part Number : 9.110.018 - 9.100.018-725. Verify compatibility by checking the details to ensure proper fit before ordering. - Compatibility : Designed for replacement in Hammerhead 80T and TrailMaster Mid XRX Mud Head go-karts that feature a 6.5hp engine. This 725 Torque Converter Asymmetrical Drive Belt is also used in various kits, including many TrailMaster and Hammerhead mid karts. Ensure that the driver and driven pulley sizes range between 6 5/8 inch and 6 11/16 inch. - Durability : Over time, belts can become loose or break due to wear. Our drive belt offers excellent wear resistance and corrosion resistance, making it an ideal replacement for your original belt. Priced significantly lower than OEM options, this product guarantees value without compromising on quality. Each unit is 100% brand new and rigorously tested prior to shipment. - High Performance : Crafted from high-quality rubber material, the 725 Torque Converter Asymmetrical Drive Belt is designed for strength and longevity. It withstands tough conditions while delivering consistent performance. - Applications : Ideal for maintaining the efficiency of your go-kart during recreational rides, handling terrain challenges, and ensuring a smooth experience on muddy trails. The durable design also supports regular use, making it suitable for both casual and competitive settings. - Recommendation : Regularly replace worn belts to keep your go-kart operating at peak performance and to prevent potential engine strain.