Used for the replacement of the original controller and handlebar to improve the speed control, and is a practical accessory. Excellent cables and reliable interfaces are durable and greatly a low failure rate for long time use. Designed with a power display, clearly showing the amount of power remaining, even at night can let you see at a glance, effectively improving driving safety. Controller housing is made of aluminum alloy with a groove design to protect the internal circuitry, facilitate heat dissipation and avoid thermal overload. Throttle grip kit is fit for Razor MX350 Electric Scooter, please confirm whether your model is applicable before buying. 1. Applicable Models: Throttle grip kit is fit for Razor MX350 Electric Scooter, please confirm whether your model is applicable before buying. 2. Clear Display: Designed with a power display, clearly showing the amount of power remaining, even at night can let you see at a glance, effectively improving driving safety. 3. Circuit Protection: Controller housing is made of aluminum alloy with a groove design to protect the internal circuitry, facilitate heat dissipation and avoid thermal overload. 4. High Stability: Excellent cables and reliable interfaces are durable and greatly a low failure rate for long time use. 5. Ideal Replacement: Used for the replacement of the original controller and handlebar to improve the speed control, and is a practical accessory. Spec: Item Type: Motor Brushed Speed Controller Material: Rubber, Metal Aperture of Twist Grip: Approx: 22mm/0.86in Rated Voltage: 24V DC Current Limit: 22A Rated Power: 350w Mating Motor: DC brush motor Undervoltage Protection: 31V Throttle Voltage: 1V to 4.2V Applicable Models: Fit for Razor MX350 Electric Scooter How to Use: Connect the battery, motor, throttle, ignition switch. Turn on the ignition switch, the motor starts to work. PackageList: 2 x Throttle Handle 1 x Motor Controller 2 x Key Note: Professional installation is highly recommended. Feedback from user: Throttle: Green, black red>> Green, black, redYellow/White to Pink/ Blue connector (Labeled Power Locks)Blue/ Yellow Connector for Motor. You will need to revered the wiring colors to get the motor to travel in the forward position. Make sure your wiring is Blue to Red and Black to yellow.Power/Battery Connector does not fit on Razor connector. You will need to pull the red and back wires out from the controllers harness and place the blades into the batter connector Red to Red and Black to BlackThere is a connector labeled as charge port. Make sure your wires are red to red// black to black. This was reversed and caused the short initially.There is a connector labeled brake which can be used. You will need to modifying the existing raxr 350 harness to connect into this if you want to use this feature. Ultimately this is a kill switch that disconnects power to motor when brake lever is squeezed. I am bypassing this feature. Hope this helps someone 4.2 out of 5 starsThrottle Grip with Lock, Anti Aging Motor Brushed Speed Controller Power Display Circuit Speed Motor Controller Low Failure Rate 24V 350W for Razor MX350 Electric Scooter Share: Found a lower price? Let us know. Although we can't match every price reported, we'll use your feedback to ensure that our prices remain competitive. Fields with an asterisk * are required **0102030405060708091011120102030405060708091011121314151617181920212223