Replaceable tube compatible with: Crazy Cart (version 1+)Crazy Cart XLDune Buggy (front only)E100 (front only)E125 (front only)E150 (version 6+)(front only)E175 (version 19+)E200 (front/rear)E Punk (front/rear)PowerRider 360RX200 (front/rear)UB1(front/rear)Razor Part #W13112099045 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.).