---
product_id: 486296746
title: "12V DIY Modified Upgrade Conversion Kit for Power Wheel"
brand: "polynx"
price: "HK$617"
currency: HKD
in_stock: true
reviews_count: 10
category: "Polynx"
url: https://www.desertcart.hk/products/486296746-12v-diy-modified-upgrade-conversion-kit-for-power-wheel
store_origin: HK
region: Hong Kong
---

# 12V high power output 2.4G Bluetooth remote control DIY easy-install wiring harness 12V DIY Modified Upgrade Conversion Kit for Power Wheel

**Brand:** polynx
**Price:** HK$617
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your kid’s ride with pro-level power and control — DIY style!

## Quick Answers

- **What is this?** 12V DIY Modified Upgrade Conversion Kit for Power Wheel by polynx
- **How much does it cost?** HK$617 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/486296746-12v-diy-modified-upgrade-conversion-kit-for-power-wheel)

## 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

- • **Power Up Your Ride ⚡:** 12V 40A 200W control box delivers high-speed motor compatibility for an adrenaline-pumping upgrade.
- • **Total Command Control 🎮:** Multiple switches including start, speed, direction, and pedal for full customizable driving experience.
- • **Plug & Play Simplicity 🔧:** One-button installation sockets make wiring and maintenance effortless—even for first-timers.
- • **Pro-Grade Reliability 🛠️:** Backed by 10+ years of expert support and robust overload protection for worry-free adventures.
- • **Seamless Wireless Freedom 📡:** 2.4G Bluetooth remote control ensures responsive, lag-free operation from a distance.

## Overview

The POLYNX 12V DIY Modified Upgrade Conversion Kit is a comprehensive wiring harness and control system designed to boost kids’ ride-on power wheels with 12V high-power performance, easy installation, and 2.4G Bluetooth remote control. It includes all essential components for a full upgrade, multiple switch controls for versatile operation, and professional support, making it the ultimate kit for parents and hobbyists seeking a reliable, high-speed ride-on experience.

## Description

desertcart.com: POLYNX 12V DIY Modified Upgrade Conversion Kit for Power Wheel | Ride On Wire Harness,2.4G Remote Controller Kit,Kids Ride On Car Replacement Parts : Toys & Games

Review: As described worked great - Worked great 👍
Review: Build surprised well ! - Only purchased this for the main controller and end up using all the pieces and switches due to them being better quality and more Kid Friendly. Accidently put 24V to it and reversed polarity and it's still working like a champ. This kit is great for any vehicle pretty much (even homemade), it comes with everything beside the vehicle and battery. I'm really impressed with them.

## Features

- Complete DIY Wiring Harness Kit: 12V self-made ride on power wheel kids electric toy car full set of wiring harness switches and 2.4G Bluetooth control box kit upgrade parts
- High Power Performance: 12 Volt Weelye 40A 200W high power wiring harness control box kit, can match high power high speed motor gearbox upgrade
- Complete Set of Components: Includes remote control and receiver, wire, start switch, high and low speed switch, forward and backward stop switch, pedal, overload protector, and charging port
- Easy Installation Design: The battery cable and motor cable feature one-button installation sockets for convenient replacement, maintenance and installation, and the controller has a slow-start function
- Professional Support Available: The working voltage is 12V, backed by more than 10 years of maintenance experience and professional after-sales team for any questions or assistance
- Frequency Matching Required: When using for the first time, you need to match the frequency using the remote control by following the instructions provided, this product is a DIY product requiring certain hands-on ability
- Multiple Switch Controls: Features start power switch, high-speed and low-speed switch, forward and backward stop switch, and pedal switch for comprehensive control of your power wheel vehicle

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BGP91ZK9 |
| Age Range Description | Kid |
| Best Sellers Rank | #139,336 in Toys & Games ( See Top 100 in Toys & Games ) #296 in Kids' Ride-On Replacement Parts |
| Brand Name | POLYNX |
| Color | Red |
| Customer Reviews | 4.2 out of 5 stars 88 Reviews |
| Educational Objective | Game, play |
| Included Components | controller, remote control, switch, wires |
| Item Dimensions | 7.87 x 5.51 x 3.9 inches |
| Item Type Name | 12VWIRES |
| Item Weight | 0.58 kg |
| Manufacturer | POLYNX |
| Manufacturer Maximum Age (MONTHS) | 100 |
| Manufacturer Minimum Age (MONTHS) | 18 |
| Manufacturer Part Number | WRIERX74RC12V |
| Material Type | Plastic |
| Model Number | 12RX71 |
| Number of Players | 1 |
| Operation Mode | Manual |
| Power Source | Battery Powered |
| Set Name | POLYNX 12V DIY Ride-On Power Wheel Upgrade Kit (1 Set) |
| Size | 12V |
| Supported Battery Types | 12V |
| Theme | Ride on car upgrade |
| UPC | 738058209334 |

## Images

![12V DIY Modified Upgrade Conversion Kit for Power Wheel - Image 1](https://m.media-amazon.com/images/I/61p+ANQ2DuL.jpg)
![12V DIY Modified Upgrade Conversion Kit for Power Wheel - Image 2](https://m.media-amazon.com/images/I/61+pH5Ca7gL.jpg)
![12V DIY Modified Upgrade Conversion Kit for Power Wheel - Image 3](https://m.media-amazon.com/images/I/61vnR5it8wL.jpg)
![12V DIY Modified Upgrade Conversion Kit for Power Wheel - Image 4](https://m.media-amazon.com/images/I/61w8LXffnsL.jpg)
![12V DIY Modified Upgrade Conversion Kit for Power Wheel - Image 5](https://m.media-amazon.com/images/I/61Uh9O09DKL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ As described worked great
*by D***S on December 14, 2025*

Worked great 👍

### ⭐⭐⭐⭐⭐ Build surprised well !
*by C***E on March 13, 2024*

Only purchased this for the main controller and end up using all the pieces and switches due to them being better quality and more Kid Friendly. Accidently put 24V to it and reversed polarity and it's still working like a champ. This kit is great for any vehicle pretty much (even homemade), it comes with everything beside the vehicle and battery. I'm really impressed with them.

### ⭐⭐⭐⭐ Good, but not plug and play
*by N***S on October 6, 2024*

I used this kit to repair my child's ride on toy that had a bad controller board. Because it was an off-brand there were no direct replacements so I decided to just replace everything. Overall, it seems better made than what the car came with. However, a wiring diagram should have come in the box rather than just the Amazon listing. Unless you have a model very similar to this one, this is a kit for someone comfortable crimping/soldering wiring terminals. Mounting the switch gear and running new wires is a project in and of itself. The end result seems good. I'm also running an 18v power tool battery conversion kit and it seems to handle it just fine.

## Frequently Bought Together

- POLYNX 12 Volt Power Wheel DIY Modified Wires,High Power Self-Made Children Electric Car Wires Harness and Power Wheel Remote Kit Weelye 2.4G Remote Controller Kit Ride On Replacement Accessories
- weelye RS380 12V Steering Motor for Remote Control Car, Children Electric Car Steering Gearbox with Motor, Children Ride On Car Replacement Parts
- ExpertPower 12v 7ah Rechargeable Sealed Lead Acid Battery

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hk/products/486296746-12v-diy-modified-upgrade-conversion-kit-for-power-wheel](https://www.desertcart.hk/products/486296746-12v-diy-modified-upgrade-conversion-kit-for-power-wheel)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-08-16*