---
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: "฿37420"
currency: THB
in_stock: true
reviews_count: 13
category: "Joystar"
url: https://www.desertcart.co.th/products/448260440-20-inch-mountain-bike-for-kids-ages-7-12-year
store_origin: TH
region: Thailand
---

# Dual disc brakes for quick stopping 3-inch wide knobby fat tires 7-speed Shimano drivetrain 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:** ฿37420
**Availability:** ✅ In Stock

## Summary

> 🚴‍♀️ Ride Bold, Ride Free — The Ultimate Fat Tire Adventure Awaits!

## 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?** ฿37420 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/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 cruising in no time with zero hassle.
- • **Built to Last & Grow:** Durable alloy steel frame supports riders up to 150 lbs, perfect for kids aged 7-12 growing into their next-level bike.
- • **Safety First, Always:** Dual disc brakes provide rapid, reliable stopping power for confident rides every time.
- • **Conquer Every Terrain:** 3-inch fat tires deliver unmatched traction on sand, mud, snow, and pavement—adventure-ready for every ride.
- • **Effortless Gear Shifting:** Shimano 7-speed drivetrain with twist shifters ensures smooth, precise control on hills and trails.

## Overview

The JOYSTAR 20 Inch Mountain Bike is a rugged, kid-friendly bicycle designed for ages 7-12, featuring a durable alloy steel frame, wide 3-inch knobby fat tires for superior traction, a smooth 7-speed Shimano drivetrain, and responsive dual disc brakes. Lightweight yet sturdy, it 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 ready to explore with confidence.

## 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: 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.
Review: Mountain Bike - We bought this Bike for our Granddaughter and she loved it! Easy to put together! And shes in love!

## 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 |
| Age Range (Description) | Kids |
| Assembly Required | Yes |
| Best Sellers Rank | #148,471 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #146 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 | 4.1 4.1 out of 5 stars (299) |
| Date First Available | July 1, 2021 |
| Derailleur Configuration | Rear |
| Frame Material | Alloy Steel |
| Frame Size | 20 Inch |
| Frame Type | Diamond |
| Included Components | Kickstand, Reflectors |
| Item Package Dimensions L x W x H | 50 x 24 x 8.5 inches |
| Item Weight | 13.15 Kilograms |
| Manufacturer | Sugoo Cycles Ltd. |
| Material | Carbon Steel |
| Maximum Weight Recommendation | 150 Pounds |
| Minimum User Height | 48 Inches |
| Model Name | JOYSTAR Minifat |
| Number of Speeds | 7 |
| Package Weight | 18.26 Kilograms |
| Part Number | HHD011-JOYSTAR |
| Power Source | Pedal power |
| Seat Material Type | Vinyl |
| Size | 20 Inch Wheels |
| Special Feature | Lightweight |
| Style | Mountain |
| Suggested Users | unisex-child |
| Suspension Type | Rigid |
| Warranty Type | Limited Lifetime Warranty |
| Wheel Material | Alloy Steel |
| Wheel Size | 20 Inches |
| Year | 2021 |

## 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

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Mountain Bike
*by D***N on September 5, 2025*

We bought this Bike for our Granddaughter and she loved it! Easy to put together! And shes in love!

### ⭐⭐⭐⭐ Needs fine tuning
*by L***S on August 18, 2025*

Nice bike. But came with a bent bolt on the handlebar clamp. N one of the bearings are sufficiently greased. Speaks to shoddy assembly. When I'm done greasing and tuning it will be fine.

## Frequently Bought Together

- JOYSTAR 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
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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-27*