XIKOBY 24V MX350 controller kit for Razor E200/E300 - 4‑pin twist-grip throttle, direct replacement

The XIKOBY 24V MX350 controller kit is a direct-replacement control module and twist-grip throttle designed to restore or upgrade 24V Razor E200/E300 scooters and MX350/MX400 dirt rocket bikes.

If your scooter or dirt rocket is losing acceleration response, has inconsistent speed control, or needs a compatible replacement after damage, this kit gives you the core electronics needed to manage motor speed, torque and throttle input. The package includes the MX350-style control module and a 4-pin E300 twist-grip throttle so you can swap parts quickly. Read on to see what fits, how the parts work, and practical installation notes.

How do I know this controller and throttle will fit my Razor scooter or dirt bike?

Compatibility hinges on model and version numbers. This 24V controller and 4-pin twist throttle are built to match specific Razor E200 and E300 scooters and MX350/MX400 dirt rocket bikes across several version ranges. Always check the printed controller model and the throttle connector before ordering.

• Compatible scooters: Razor E300 Version 20+, E200 Versions 13–23
• Compatible bikes: Razor MX350 Versions 33–36 and MX400 Versions 33–36
• Controller model reference: ZK2430-D-FS-ROHS (verify on your existing unit)
• Throttle connector: 4-pin male—confirm the connector shape matches your wiring harness

What does the controller actually do and why replace it?

The controller translates rider input from the throttle into motor commands that regulate speed, torque and braking behavior. Replacing a faulty controller restores predictable acceleration and can include built-in protections to limit current in fault conditions, reducing the risk of damage to motor or electronics.

• Converts throttle voltage signals into motor speed and torque outputs
• Supports mode switching for different road or load conditions
• Power-off and over-current protection to limit damage during faults
• Improves acceleration response and braking control when defective unit is replaced

How does the twist-grip throttle work with the control module?

The included MX350-style twist throttle senses rotational movement via an internal magnetic or potentiometer element and outputs a corresponding voltage to the controller. That voltage tells the controller how much power the motor should deliver, allowing smooth, proportional speed control as you twist the grip.

• Twist-grip design for intuitive speed control
• Magnetic/potentiometer sensing translates grip rotation into voltage signal
• 4-pin connector provides secure electrical plug-in to the controller harness
• Delivers fine throttle modulation for gradual acceleration or precise speed hold

What comes in the box and what should I check before installation?

The kit includes the MX350 control module and an E300-style twist-grip throttle. Before beginning installation, compare connector types, mounting points and the controller model printed on your original unit to ensure an exact match. If wiring or harnesses differ, consult a service manual or seek a technician to avoid mis-wiring.

• Package contents: 1 control module (MX350), 1 E300 twist-grip throttle
• Verify controller model: ZK2430-D-FS-ROHS printed on unit
• Confirm throttle connector: 4-pin male to match scooter harness
• Check mounting space and secure all fasteners and wiring after fitment

Who is this for: This XIKOBY controller and throttle kit is intended for DIY owners and technicians who need a reliable, plug-in replacement for compatible 24V Razor E200/E300 scooters and MX350/MX400 dirt rocket bikes. It's suited to riders restoring an older vehicle, repairing crash- or water-damaged electronics, or replacing worn throttle components. If you’re uncertain about version compatibility or electrical connections, have a qualified mechanic confirm fitment before installation.