Description: 100% Brand New Go Kart Centrifugal Clutch for 40 41 420 Chain 6.5HP. Made of high quality matel, light weight, strong and durable, offer maximum torque, fast heat dissipation. This clutch design to fits for Go-kart, Mini-bike, ATV Parts, Lawnmower. Tooth: 10; 3/4" bore designed for 6.5hp 212CC engines. Simple design, easy to remove and install. Specification: Material: Metal Diameter of Clutch Assy: Approx. 107mm/4.21inch Inner Hole Diameter: Approx. 19mm/0.75inch Package Includes: 1 piece Go Kart Centrifugal Clutch Note: 1. Please check as much as possible to make sure the item is the one that you need. 2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm)