24volt kit!
  ATTENTION-- This kit will come as pictured in the first main picture unless you attach and ad the note to seller during checkout and state the # you see in the picture of the throttle that you want, this must be done at checkout and dont forget to "ad" after you type it.

    Fast Scooters does it again with our Variable Speed Kit AND Digital Throttle With Key! 

                          Fancy throttle and matching grip and built in key,it will now turn on and off by the key,,not the on/off switch... 
                                                        24 volt only- not to be used with 36volts!!

Giving your scooter the ability to control the speed from slow to fast and everything in between compared to stock style full throttle and off is a must have and makes your MX look sick!

This kit also has optional Brake Light and Taillight or Headlight outputs to make your Razor MX a 1 of a kind!

Headlight kit- eBay item number: 143932816959

Brake or taillight kit- eBay item number: 133196417171

Reduce top speed with our hidden speed reducer setup- eBay item number: 222627137275


We were the original inventors of the variable speed kits and they are such a hit we offer the digital version for people wanting exact voltage left in the batteries.

This kit works with all SX 350, MX350 and MX400 Versions and YES even the older ones!

If you would taillights,brake lights or a headlight check our ebay store for optional ad ons for this kit including mountable speed reducers to limit top speed to keep kids safe..