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The RAZOR-BACK w15128050043 is a twist grip throttle designed for electric ride-on vehicles and scooters requiring a 4-wire, single-speed throttle control. This assembly mounts to the handlebar and allows the rider to control motor speed by rotating the grip. The 4-wire configuration connects directly to the motor controller, making it a functional replacement part for compatible Razor-brand electric vehicles. Installation is typically performed by a qualified service technician familiar with low-voltage electric drive systems.
This throttle is suited for residential use on electric scooters, go-karts, or similar light electric outdoor recreation vehicles that use a single-speed 4-wire throttle interface. It is a direct replacement part sourced from the Razor parts and accessories line, intended to restore factory throttle function when the original unit is worn or damaged.
Designed as an OEM-style replacement twist grip throttle for compatible Razor electric outdoor recreation vehicles using a 4-wire single-speed throttle system.
Disconnect and remove the battery pack or power source before beginning throttle replacement. A licensed or experienced electric vehicle technician should verify wiring connections against the vehicle wiring diagram before restoring power. Secure all handlebar hardware to manufacturer-specified torque per the vehicle service manual. Do not energize the system until all connections are confirmed correct and covers are reinstalled.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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