Replacement front wheel complete compatible with: E100 (version 1+)E125 (version 1+)E175 (version 19+)E200 (version 1+)eSpark (version 41+) The assembly includes a 200x50 tyre, inner tube, axle and pre-installed bearings. Note: Model versions can be determined based on the product ID code on your Razor product. The product ID code can be found on the battery cover and/or on the bottom of the frame. The 7th and 8th numbers in your product ID code are the version number of your Razor product (e.g. "01" = Version 1, "02" = Version 2, etc.). Download Owner's Manual