EOPOAYI MX500 Controller Replacement for Razor MX650/MX500/SX500 – 36V with 3‑Pin Charger Port

Overview

The EOPOAYI MX500 controller replacement is designed to be a versatile speed control module for popular electric dirt bikes and mini quads. It supports Razor MX650 (version 14+), MX500 (version 21+), SX500 McGrath Dirt Rocket Bike, RSF650 Electric Mini Street Bike, EcoSmart Metro Scooter, and all versions of the Dirt Quad 500 ATV. Built for 36V systems, this module is a practical upgrade when the original controller becomes slow, unresponsive, or unreliable, helping you regain smooth power delivery and confident handling.

Key features and what they mean for riders

• Fitment and compatibility: Designed to work with Razor MX650 v14+, MX500 v21+, SX500 Dirt Rocket Bike, RSF650, EcoSmart Metro Scooter, and all Dirt Quad 500 ATV versions.
• Central control for electrical systems: The controller acts as the hub that coordinates throttle, motor, battery, and charging interactions, offering a reliable speed control replacement when the original unit falters.
• Under-voltage protection: If the battery pack drops to a low voltage, the controller can pause motor output to help preserve the pack and stabilize riding behavior.
• 36V specifications: This is a 36V controller (model HB3650-TYD6-FS-ROHS; part code W15165070015). Please verify the exact model before purchase.
• Easy installation: Features six connectors that link to the battery kit, motor, throttle, charger, and brake. It’s plug-and-play, and the 3-pin charger port includes a rubber cap for port protection, reducing setup complexity.
• Version confirmation: Use the product ID code on your unit to determine its version; the 7th and 8th digits reveal the version number (e.g., 01 = Version 1, 02 = Version 2).

Why riders should consider this MX500 controller

• Upgrade without a full teardown: Replace a failing controller with a single, straightforward part.
• Potential for improved reliability: A well-matched controller can bring steadier acceleration and smoother performance across terrains.
• Safety-conscious design: Undervoltage protection helps prevent sudden motor shutdowns that could surprise the rider.

Installation tips and care

The kit emphasizes a tool-light, plug-and-play approach. Connectors are color- and function-matched to battery, motor, throttle, charger, and brake, making installation approachable for hobbyists and hobbyist mechanics alike. The rubber-capped 3-pin charger port helps shield the plug from dust and moisture between rides. Before purchasing, check your product ID code on the battery cover or frame bottom to confirm the version you need.