IF YOU WOULD LIKE ANY OTHER THROTTLE PICTURED ABOVE YOU MUST SEND A MESSAGE AT CHECKOUT  WITH THE # YOU SEE IN THE PICTURE AND THEN CLICK "AD MESSAGE" AFTER YOU TYPE IT OR IT COMES AS PICTURED IN MAIN PICTURE.     

    This is a overvolt kit to run your existing 36volt motor in 48volt you DO NOT need to swap the motor (Makes it 50%faster)..This kit MUST be ran in 48 Volts only and will not work in 36 volts anymore,meaning you will need to ad another battery to run this and a 48volt charger to charge it and neither come with this kit,,it will only run in 48 volts/lithium 48v pack or a 48v lifepo4 pack,minimum voltage/low voltage cut off is 41.5..We sell very nice chargers that are plug n play to the factory plug on this bike,its 

eBay item number for 48v charger: 322690569798 -just type that number in ebay search
322468377682




Please take note--We send this controller kit setup to bypass the factory on/off switch because if you want all 4 batteries under the factory box it needs done like that,which means you remove the on/off switch and the harness that is attached to it...So your batteries will now plug directly into the controller,the harness that went from the batteries(4 pin to the on'off then to the controller 3 pin) will not be used anymore as pictured above is how we run 4 batteries under the factory cover.

pics showing install of all 4 batteries in the listing

Now you can keep it safe and know EXACTLY how much battery life you have with our built key with a Digital display with ball milling on some of our available colors!..


 Comes standard as pictured but we also have anodized Blue,Red and as pictured above and 2 style of thumb throttles in black with digital voltage readout 1 has a key and one has a on off switch available in other auctions or request what you want at checkout by sending message to seller and attaching it..

This is a much better controller that's always in stock and competitive on price with performance gains of up 50%

  We were the first manufacture of variable speed kits for all the razor products and now we offer a version for your MX500, MX650 or Eco Smart with a built in key on the throttle which turns your scooter on and off and you have a fancy multimeter display for exact voltage readings.. 

  This kit plugs right in like stock but is slightly different in size and requires zip ties to keep in place or set it in on some scooters..It comes with a matching grip and you have a actual full twist throttle instead of the half twist ones. 

   We also ad optional Brake Light and Tail light/Headlight outputs on this controller and we sell LED plug N play kits too for them that will light up your scooter to keep you safe and seen(our headlight kit will light up the woods,12 watts,and looks like a car with hi beams on coming at you) so check them out in our ebay store! -If you do not want these options added just send a note.

   Headlight kit- eBay item # 222627137235

  Tail light or Brake light Kits - eBay item # 224045198940




Fits all versions of the MX500, MX650 & Eco Smart (not the hd hub drive eco)... 

This item is tested prior to shipping..If you find it to not work on your Bike then you have another issue,,If you need help then you can call customer service at-----Please if your not sure you need this,dont buy it,simply find a volt meter and call us to help verify whats wrong with your scooter.. 

Need more than 1 kit,once you use it you will---So buy as many as you want for only $3 extra shipping for each item! 

Controller connections 

1 brake switch,male 3 pin connector,does not use center pin 
1 brake switch,male 3 pin connector,does not use center pin 
1 motor wire female-2 pin 
1 Battery wire male-4 pin 
1 charger port female-2 pin 
1 Throttle plug that matches our throttle,simply plug it in
Optional Brake light output
Optional Tail Light output 

4 1/4 inches (stock is 4 1/2)-fits perfect but does not lign up to holes,velcro works great.Throttle Wire Length: 77 inches-(stock is 57 inches) so you have plenty of wire e plenty of wire

TAKE NOTE PLEASE---
Will not fit the Hub Motor style

EcoSmart Metro HD Electric Scooter.

This is for a brushed motor only and will not work on the brushless hub motor newer style Ecosmart with a rear hub motor!