Replacement 4 wire, single speed throttle for the Razor MX350 (versions 9 and up), the Razor MX400 (version 1+) and the Razor Pocket Rocket (versions 7 and up). Not compatible as a replacement for units that come with a variable speed, 4 wire throttle that has lights.
IMPORTANT NOTE: Model versions can be determined by locating your bar code ID on the bottom of the bike frame. The 7th and 8th digit in the series will tell you the version of your product: 01=version 1; 02=version 2; 09=version 9, and so on. Please be sure you identify your product version before placing an order for a throttle.