Razor E-300 Rear Wheel Assembly, V36+ 3 x 4.00 Tire &amp; Tube Freewheel Hub Axle adjusters &amp; axle Sprocket 55 tooth Rear Rear Wheel Assembly for the E300, Versions 36+ WILL NOT FIT OTHER VERSIONS! Includes rim, 3.00-4 tire and inner tube, bearings, brake assembly, 55 tooth chain sprocket, axle, axle spacers, and nuts. Compatible with Razor E300S, Razor E300 How To Identify Your Razor Model Version: Razor Scooter Parts Bar Code Model versions can be determined based on your 8-digit Bar Code ID. The Bar Code ID can be found on many places including the battery cover, on the bottom of the frame, charger, stem and/or box. The 7th and 8th digits are the version number (e.g. "09"=version 9, "10"=version 10, etc.).