Razor OEM replacement E300 Scooter Chain Tensioner for versions 36 and up of the Razor E300, E300S, E325, E325S electric scooters. W13113640079 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