13 Tooth Sprocket With 10mm Bore For #25 Chain This 13 tooth sprocket with 10mm bore is designed for use with most XYD style electric scooter motors. Includes retention pin. Dimensions Outer Diameter: 1-3/16'' / 30mm Inner Diameter: 3/8'' / 10mm sk-13t Home | New Arrivals | Hover Boards | Quadcopters | Electric Scooters | Electric Bikes| Razor Scooter Parts | Scooter Parts | PS4 | Xbox ONE | iWatches / Gadgets | Shipping | FAQ | About Us | Scooter Laws | Returns | Shopping Cart