OEM Thumb throttle for 36 Volt TRX® Personal Transporter Electric Scooter. Original throttle with two handlebar grips for the TRX® Personal Transporter electric scooter. Throttle has a battery indicator light and installation is as easy as plug and ride. This is the only throttle used on the TRX scooter that does not require any modification prior to installation. Make sure to turn off the TRX scooter before installing the scooter throttle.