---
product_id: 643455065
title: "2PCS Kids Ride On Car Gearbox 12V RS550 40000RPM High-Speed Motor Gearbox for Power Wheels Kid's Ride on Toys Upgrade,High Torque Motor for Kid's Electric Vehicle Replace Parts,2 Free Coupler"
brand: "polynx"
price: "353 Lei"
currency: RON
in_stock: true
reviews_count: 13
category: "Polynx"
url: https://www.desertcart.ro/products/643455065-2pcs-kids-ride-on-car-gearbox-12v-rs550-40000rpm-high
store_origin: RO
region: Romania
---

# 12V high voltage power 12mm shaft diameter for universal fit 40000 RPM ultra-fast motor speed 2PCS Kids Ride On Car Gearbox 12V RS550 40000RPM High-Speed Motor Gearbox for Power Wheels Kid's Ride on Toys Upgrade,High Torque Motor for Kid's Electric Vehicle Replace Parts,2 Free Coupler

**Brand:** polynx
**Price:** 353 Lei
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your kid’s ride to turbo mode—because ordinary just won’t do!

## Quick Answers

- **What is this?** 2PCS Kids Ride On Car Gearbox 12V RS550 40000RPM High-Speed Motor Gearbox for Power Wheels Kid's Ride on Toys Upgrade,High Torque Motor for Kid's Electric Vehicle Replace Parts,2 Free Coupler by polynx
- **How much does it cost?** 353 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/643455065-2pcs-kids-ride-on-car-gearbox-12v-rs550-40000rpm-high)

## Best For

- polynx enthusiasts

## Why This Product

- Trusted polynx brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual Pack Value:** Two high-torque gearboxes plus free couplers for double the upgrade potential
- • **Turbocharged 12V Power:** Delivers robust energy for thrilling ride-on performance
- • **Plug & Play Installation:** Includes cables and couplers—no welding or complex setup required
- • **Universal 12mm Shaft Fit:** Seamlessly compatible with most Power Wheels models for easy replacement
- • **Lightning-Fast 40000 RPM Motor:** Experience unmatched speed upgrades for your kid’s electric vehicle

## Overview

This 2-piece set of 12V RS550 high-speed motor gearboxes offers a powerful 40000 RPM upgrade for kids’ ride-on cars, featuring a universal 12mm shaft diameter and easy plug-and-play installation with included couplers and cables. Designed to enhance performance and durability for Power Wheels and similar electric ride-on toys.

## Description

desertcart.com: 2PCS Kids Ride On Car Gearbox 12V RS550 40000RPM High-Speed Motor Gearbox for Power Wheels Kid's Ride on Toys Upgrade,High Torque Motor for Kid's Electric Vehicle Replace Parts,2 Free Coupler : Toys & Games

Review: Works well - Works well
Review: Wouldn't recommend unfortunately. - Purchased these 11 days ago. Had them installed for about a week. My son had maybe two hours total worth of drive time with them and it seems either the motors are shot or the gear boxes are shot. Was nice while it ran. The motors are both hot to the touch, smell of melted plastic and tires no longer spin and the hub no longer spins. Not happy with this purchase at all. Wouldn't recommend.

## Features

- 2PCS 12 Volt Universal Motor Gearbox is Used for Power Wheels, Kids Electric Toys Car, Ride On Car Motor Upgrade and Replacement Parts
- The products include: two high-quality gearboxes, two white circular couplers, and two motor connection Cables
- Suitable for repairing and upgrading power wheels, please compare the size before purchasing, voltage: DC12V, speed: 40000RPM, shaft hole diameter: 12mm (0.48"); motor diameter: 35mm (1.39")
- With a coupler, you only need to fix the coupler to the tire to customize the installation.
- With cable, easy to install and disassemble, no need for electric welding

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D54M1H77 |
| Best Sellers Rank | #90,962 in Toys & Games ( See Top 100 in Toys & Games ) #66 in Kids' Ride-On Replacement Parts |
| Brand | POLYNX |
| Date First Available | May 24, 2024 |
| Horsepower | 45 Watts |
| Item Weight | 2.55 pounds |
| Item model number | White Coupler |
| Manufacturer | POLYNX |
| Material | Plastic |
| Model Name | 12V RS550 40000RPM |
| Product Dimensions | 3.71"W x 4.6"H |
| Shaft Diameter | 12 Millimeters |
| Speed | 40000 RPM |
| UPC | 782331890009 |
| Voltage | 12 Volts |

## Product Details

- **Brand:** POLYNX
- **Horsepower:** 45 Watts
- **Model Name:** 12V RS550 40000RPM
- **Speed:** 40000 RPM
- **Voltage:** 12 Volts

## Images

![2PCS Kids Ride On Car Gearbox 12V RS550 40000RPM High-Speed Motor Gearbox for Power Wheels Kid's Ride on Toys Upgrade,High Torque Motor for Kid's Electric Vehicle Replace Parts,2 Free Coupler - Image 1](https://m.media-amazon.com/images/I/41QKyCtio5L.jpg)
![2PCS Kids Ride On Car Gearbox 12V RS550 40000RPM High-Speed Motor Gearbox for Power Wheels Kid's Ride on Toys Upgrade,High Torque Motor for Kid's Electric Vehicle Replace Parts,2 Free Coupler - Image 2](https://m.media-amazon.com/images/I/41Y8e6gdpdL.jpg)
![2PCS Kids Ride On Car Gearbox 12V RS550 40000RPM High-Speed Motor Gearbox for Power Wheels Kid's Ride on Toys Upgrade,High Torque Motor for Kid's Electric Vehicle Replace Parts,2 Free Coupler - Image 3](https://m.media-amazon.com/images/I/41g-20enH1L.jpg)
![2PCS Kids Ride On Car Gearbox 12V RS550 40000RPM High-Speed Motor Gearbox for Power Wheels Kid's Ride on Toys Upgrade,High Torque Motor for Kid's Electric Vehicle Replace Parts,2 Free Coupler - Image 4](https://m.media-amazon.com/images/I/41m30e89lPL.jpg)
![2PCS Kids Ride On Car Gearbox 12V RS550 40000RPM High-Speed Motor Gearbox for Power Wheels Kid's Ride on Toys Upgrade,High Torque Motor for Kid's Electric Vehicle Replace Parts,2 Free Coupler - Image 5](https://m.media-amazon.com/images/I/41qv+H80AOL.jpg)

## Available Options

This product comes in different **Model** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well
*by C***S on January 4, 2026*

Works well

### ⭐ Wouldn't recommend unfortunately.
*by M***W on October 14, 2025*

Purchased these 11 days ago. Had them installed for about a week. My son had maybe two hours total worth of drive time with them and it seems either the motors are shot or the gear boxes are shot. Was nice while it ran. The motors are both hot to the touch, smell of melted plastic and tires no longer spin and the hub no longer spins. Not happy with this purchase at all. Wouldn't recommend.

### ⭐⭐⭐⭐⭐ very good
*by E***Z on January 2, 2026*

very good

## Frequently Bought Together

- 2PCS Kids Ride On Car Gearbox 12V RS550 40000RPM High-Speed Motor Gearbox for Power Wheels Kid's Ride on Toys Upgrade,High Torque Motor for Kid's Electric Vehicle Replace Parts,2 Free Coupler
- 14PCS Set of Switch Kit for Power Wheels Kid's Ride on Toys Replacement Parts, Foot Pedal/Forward Stop Backward Shift/Push Button Power Supply/Reverse Handle Gear/High&Low Speed/Charging Port/Fuse

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-09*