---
product_id: 448260440
title: "20 Inch Mountain Bike for Kids Ages 7-12 Year Old, 3-Inch Wide Knobby Tires, 7 Speed Shimano Drivetrain, Disc Brakes, Fat Tire Kids Bicycles for Boys Girls"
brand: "joystar"
price: "R25732"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Joystar"
url: https://www.desertcart.co.za/products/448260440-20-inch-mountain-bike-for-kids-ages-7-12-year
store_origin: ZA
region: South Africa
---

# Dual disc brakes for quick, reliable stopping power 3-inch wide knobby fat tires for ultimate traction 7-speed Shimano drivetrain for smooth gear shifts 20 Inch Mountain Bike for Kids Ages 7-12 Year Old, 3-Inch Wide Knobby Tires, 7 Speed Shimano Drivetrain, Disc Brakes, Fat Tire Kids Bicycles for Boys Girls

**Brand:** joystar
**Price:** R25732
**Availability:** ✅ In Stock

## Summary

> 🚴‍♀️ Ride Bold, Ride Beyond – The Ultimate Kids’ Mountain Bike Experience!

## Quick Answers

- **What is this?** 20 Inch Mountain Bike for Kids Ages 7-12 Year Old, 3-Inch Wide Knobby Tires, 7 Speed Shimano Drivetrain, Disc Brakes, Fat Tire Kids Bicycles for Boys Girls by joystar
- **How much does it cost?** R25732 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/448260440-20-inch-mountain-bike-for-kids-ages-7-12-year)

## Best For

- joystar enthusiasts

## Why This Product

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

## Key Features

- • **Ready to Ride Fast:** 85% pre-assembled with included tools and lifetime warranty—get your kid on the trail faster and worry-free.
- • **Built to Last & Grow:** Durable carbon steel frame supports riders up to 150 lbs, perfect for kids aged 7-12 growing into adventure.
- • **Safety First, Always:** Dual disc brakes and non-slip pedals with reflectors ensure confident, controlled stops and visibility.
- • **Conquer Every Terrain:** Fat 20x3 inch knobby tires deliver unmatched grip on sand, mud, snow, and pavement—no trail too tough.
- • **Effortless Gear Shifting:** Shimano 7-speed drivetrain with twist shifters makes uphill climbs and speedy descents a breeze.

## Overview

The JOYSTAR 20 Inch Mountain Bike is engineered for kids aged 7-12, featuring a robust carbon steel frame, 7-speed Shimano drivetrain, and wide 3-inch knobby fat tires for superior traction across all terrains. Dual disc brakes provide responsive stopping power, while non-slip pedals and reflectors enhance safety. Lightweight yet durable, this bike supports riders up to 150 lbs and comes 85% pre-assembled with a limited lifetime warranty, making it the perfect all-terrain companion for young adventurers.

## Description

desertcart.com : JOYSTAR 20 Inch Moutain Bike for Kids Ages 7-12 Year Old Boys Girls Shimano 7-Speed and Dual Disc Brake 20 Inch Fat Tire Boy Bike Kids' Bicycle Black : Sports & Outdoors

Review: Great kids bike - I really like the sturdiness of this bike. Gave it to kiddo two months ago and she rides it daily. One of her favorite play time activities. The kickstand is sturdy, gears shift easily and the broad tires help with out uneven terrain.
Review: Quality bike - Purchased for my daughter’s 7th birthday, she was of course ecstatic to receive. She enjoys going over curbs and down grassy terrain, and the tires seem to hold up well. She was a bit intimated at first as it is a larger bike to maneuver—it’s a wider steer and has taken her some time to get used to. The gears shift smoothly and I can see her riding this bike for many years to come.

## Features

- Mountain Bike for Kids: JOYSTAR Minifat 20 Inch Fat Tire bike for kids is designed for 7-13 years children. The steel frame, wider fat tires and dual handbrakes are great for cruising along uneven regions. The suggested rider height is 48 to 60 inches
- Excellent Shifting: A Shimano rear derailleur with 7 speeds drivetrain makes hills easier to climb, while twist shifters make it smooth and easy to change gears while riding.
- Safer Riding Trails: The Dual Disc Brakes have excellent braking with a quick response time; Non-slip resin pedals with reflectors; The fat tires also do an excellent job of generating enough traction on any surface – sand, bogs, mud, snow or pavement.
- Fat Tires For More Fun: 20 x 3.0 inch knobby mountain fat tires provide excellent stopping power and tons of traction in sand and snow. DIY decals to name the bike add extra fun to the ride. This kids bike with soft seat offers more comfort in riding
- Easy to Assemble: JOYSTAR 20 Inch Kids bike for all-terrain adventures comes with 85% assembled body and the basic assembly tools, timely customer service and also limited lifetime warranty

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09Q2N2DTN |
| Additional Features | Lightweight |
| Age Range (Description) | Kids |
| Age Range Description | Kids |
| Best Sellers Rank | #249,787 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #221 in Kids' Bicycles |
| Bicycle Drivetrain Type | Derailleur |
| Bicycle Gear Shifter Type | Twist Grip |
| Bike Type | Mountain Bike |
| Brake Style | Disc |
| Brand | JOYSTAR |
| Brand Name | JOYSTAR |
| Color | Black |
| Customer Reviews | 4.2 out of 5 stars 303 Reviews |
| Derailleur Configuration | Rear |
| Frame Material Type | Carbon Steel |
| Included Components | Kickstand, Reflectors |
| Is Assembly Required | Yes |
| Is Autographed | No |
| Item Weight | 13.15 Kilograms |
| Manufacturer | Sugoo Cycles Ltd. |
| Maximum Weight Recommendation | 150 Pounds |
| Minimum User Height | 48 Inches |
| Model Name | JOYSTAR Minifat |
| Model Year | 2021 |
| Number Of Speeds | 7 |
| Number of Handles | 1 |
| Number of Speeds | 7 |
| Power Source | Pedal power |
| Seat Material | Vinyl |
| Size | 20 Inch Wheels |
| Style Name | Mountain |
| Suspension Type | Rigid |
| Warranty Type | Limited Lifetime Warranty |
| Wheel Material | Alloy Steel |
| Wheel Size | 20 Inches |

## Product Details

- **Age Range (Description):** Kids
- **Bike Type:** Mountain Bike
- **Brand:** JOYSTAR
- **Color:** Black
- **Frame Material:** Carbon Steel
- **Included Components:** Kickstand, Reflectors
- **Number of Speeds:** 7
- **Special Feature:** Lightweight
- **Suspension Type:** Rigid
- **Wheel Size:** 20 Inches

## Images

![20 Inch Mountain Bike for Kids Ages 7-12 Year Old, 3-Inch Wide Knobby Tires, 7 Speed Shimano Drivetrain, Disc Brakes, Fat Tire Kids Bicycles for Boys Girls - Image 1](https://m.media-amazon.com/images/I/71M55scD6jL.jpg)

## Questions & Answers

**Q: I cannot find any information about how to raise the handlebar on this bike.  Anyone know how to do it?**
A: Take a wrench on the bolt that holds the handlebar in place. Lefty Losey righty tightly. Losen the bolt, pull up and tighten the bolt, and be sure to keep the handlebars straight and true with the front tire. The handlebars have little play, but you can bring them up.

**Q: How do you adjust the handlebars to go up?**
A: On the littlerock version you can't adjust the handle bars. Because of this we had to return and get the Pluto version.

**Q: How much does this bike weigh??**
A: Tho I’m not sure on exact weight my wife has no issue picking it up with one hand and loading it in the back of our truck

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great kids bike
*by D***Y on February 15, 2026*

I really like the sturdiness of this bike. Gave it to kiddo two months ago and she rides it daily. One of her favorite play time activities. The kickstand is sturdy, gears shift easily and the broad tires help with out uneven terrain.

### ⭐⭐⭐⭐⭐ Quality bike
*by N***H on May 9, 2023*

Purchased for my daughter’s 7th birthday, she was of course ecstatic to receive. She enjoys going over curbs and down grassy terrain, and the tires seem to hold up well. She was a bit intimated at first as it is a larger bike to maneuver—it’s a wider steer and has taken her some time to get used to. The gears shift smoothly and I can see her riding this bike for many years to come.

### ⭐⭐⭐⭐ Struggle Assembling Bike
*by W***A on December 25, 2025*

I bought this bike for my little brother that lives a couple of states away from me, and my mom had a difficult time putting the bike together since it came with NO INSTRUCTIONS!! We even tried going on the website to find a demo of how to put it together and absolutely nothing on this bike, I was not going to pay an extra 180$ to have it pre assembled. At least give people instructions on how to build it, if you’re going to charge double the price to have it pre built. He loved it regardless, but it sucked not being able to help my mom more when building the bike. Will not be buying from this brand again, they obviously want you to struggle if you don’t buy the pre assembled.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.co.za/products/448260440-20-inch-mountain-bike-for-kids-ages-7-12-year](https://www.desertcart.co.za/products/448260440-20-inch-mountain-bike-for-kids-ages-7-12-year)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-07*