Check the listing for details. Razor Power Core Powercore Throttle & Controller Electrical Kit Upgraded Power. Condition: New. Listed at 33.33 USD. Fast Scooters / Razor Scooter Upgrades Go Now Kit Plugs into the razor power core with no mod at all, all versions! This is what you must have if you own a e100,125,150,175,power core,Ecore,or Trikke Love your kids scooter but worried about the full throttle/off style throttle?--Not Too Safe At All!Comes standard as pictured in main picture,We can send any throttle pictured but you must include a note at checkout with the # in the picture of the throttle you want with color to be sure and then click "ad" after you type it so it comes threw. Want to be able to put a small child on this and not worry about going to fast?..This kit will allow your child to control how fast they can go from slow to full twist and everything in between AND you can ad our $20 speed reducer ( eBay item number:222627137307) which you can hide and turn the top speed down to as low as you would like even when they floor it! Want to know your batteries level (stock has no lights),this tells you battery life in the batteries.No more push start,,many people order new controllers not knowing these scooters need push started with the factory controller,,the factory controller is so weak and under-rated the scooter needs push started to go,,this setup will move a 250 pound person easily from a stop (must install our supplied higher amp breaker button).. The first variable speed kit on the market specific plug n play for ALL versions of the razor E100,150,175 and Trikke.. 1) This kit does not require you to push start it like factory.. 2) This kit is variable speed and not full speed/off like factory,it does every speed from slow to fast. 3) This kit will increase take off power . 4) This kit has the ability to ad our speed reducer to keep the little ones safe by limiting the top speed of the scooter by the turn of a button,,if you choose to ad that. 5) This kit has the ability to ad our headlight kits,taillight and brake light kits Headlight kit-eBay item number: 143932816959Brake or taillight kit-eBay item number: 142214037328 6) This kit can be used with ANY of our throttles we offer for sale (As pictured in the last 3 pictures above),,they all are plug n play ,we offer chrome,red,blue anodized digital read out with built in key. This kit is safer,,makes more sense,,ability to control top speeds when used with our speed reducer,,the ability to see when your battery is getting low and it fits inside the scooter.. 7) This kit has a built in key(comes with 2) so you can keep it safe and keep your kids off it when they don't listen. the factory on off switch is no longer used Step by step directions included heat shrink butt connectors extra ends to insure it fits all versions and a new 30amp breaker button.. The factory brake kill switch that kills the motor when the brakes are applied will not work with this kit unless you purchase our upgraded chrome over aluminum brake handle..Most people bypass this anyways as its such a common issue with these scooters.. The brakes obviously still work..Just 1 less issue to deal with in my opinion. We do sell a brake handle that will allow the use of the brake kill in our ebay store. ATTENTION-- Versions 1-9 of the razor E100 only will need slight modifications but directions,text support and phone support at all hours of the day and night available. We give phone and text support after the sale This only fits the 24volt versions, IT WILL NOT FIT THE NEWER 12VOLT E100 power cores! Please check your charger says 24volt before you order!