11 Tooth Sprocket With 10mm Bore For #25 Chain This 11 tooth sprocket with 10mm bore is designed for use with most XYD style electric scooter motors. Includes retention pin. Dimensions Outer Diameter: 1.0'' / 25mm Inner Diameter: 3/8'' / 10mm SD-250-5 Home | New Arrivals | Nintendo Wii | Playstation 3 | Electric Scooters | Razor Scooter Parts | Scooter Parts | Electric Bikes | Ezip Scooters | Xbox 360 | Nintendo 3DS | Apple | Shipping | FAQ | About Us | Scooter Laws | Warranty & Returns | Show Order