EOPOAYI MX350 Twist-Grip Throttle Replacement for Razor MX350/MX400 — 24V, 22mm Fit, 133cm Cable

EOPOAYI MX350 is a direct-fit 24V twist-grip replacement throttle made to restore precise speed control on Razor MX350/MX400 dirt bikes and compatible E-series scooters.

If your scooter or pocket bike has a worn, cracked, or unresponsive throttle, this EOPOAYI replacement is built to match the original function and fit. Designed as a plug-and-play unit with the same wiring and 22mm (7/8") handlebar fit, it replaces throttles across several Razor MX and E-series models without the need for cutting or splicing wires. The assembly includes a long 133 cm cable and a standard 4-pin connector so installation is straightforward for DIYers and repair shops alike.

Will this throttle fit my Razor model?

Check the product version on your scooter before ordering; compatibility depends on the version digits in the product ID code. EOPOAYI MX350 supports a wide list of Razor MX and E-series models, including MX350/400 bikes and E100–E300 scooters in the stated versions.

• Compatible with MX350 Version 33+, MX400 Version 33+
• Fits E300 V20+ and E200 V24+, E125 V10+, E100 V10+
• Works with SX350, RSF350, Pocket Mod scooters Version 13+
• Confirm model by checking the 7th–8th characters of the product ID code

How easy is the installation for a home mechanic?

The EOPOAYI throttle is made for a plug-and-play swap: no soldering or complex rewiring required. The cable is long enough to route through most frames and the 4-pin connector mates with the stock harness, making installation straightforward for people comfortable with basic scooter maintenance.

• 52.36 inches (133 cm) cable length for flexible routing
• Standard 4-pin connector for direct connection to factory wiring
• Fits 22mm (7/8") handlebar grips—standard scooter diameter
• Comes as a complete throttle assembly—no extra parts required

What performance and control can I expect?

This is a single-speed, twist-grip throttle that transmits rider input directly to the motor controller for predictable acceleration. It restores smooth variable throttle response so you can manage speed across different road conditions without abrupt changes.

• Accurate power control proportional to twist position
• Single-speed design for straightforward throttle mapping
• Robust grip fit to prevent slippage during use
• Durable housing intended for typical outdoor scooter use

How can I confirm I ordered the correct version?

Locate the product ID on the battery cover or underside of the frame and read the 7th and 8th digits for the version number. The EOPOAYI product code is W13113601043—verify that your scooter’s version falls in the supported list before purchasing.

• Find product ID on battery cover or bottom of frame
• 7th–8th digits indicate version (e.g., "01" = Version 1)
• Compare your version to compatibility list before ordering
• Contact seller with ID if you need confirmation

Who is this for: The EOPOAYI MX350 throttle is aimed at owners of Razor MX350/MX400 dirt bikes, SX350, RSF350, and E-series electric scooters (E100–E300) who need a reliable, direct-replacement twist-grip. It works well for DIYers, parents repairing a child’s scooter, and small repair shops that want an affordable, factory-style throttle swap without custom wiring. If you require a plug-and-play option that restores original throttle behavior and fits standard 22mm handlebars, this kit is a practical choice.