---
product_id: 448313860
title: "20 Inch Mountain Bike for Kids Ages 7-10 Year Old, 3-Inch Wide Knobby Tires, 7 Speed Drivetrain, Disc Brakes, Fat Tire Kids Bicycles for Boys Girls"
brand: "joystar"
price: "$1525.18"
currency: USD
in_stock: true
category: "Joystar"
url: https://www.desertcart.us/products/448313860-20-inch-mountain-bike-for-kids-ages-7-10-year
store_origin: US
region: United States of America
---

# Dual disc brakes for quick, reliable stopping 3-inch wide knobby fat tires for ultimate traction 7-speed drivetrain for smooth gear shifts 20 Inch Mountain Bike for Kids Ages 7-10 Year Old, 3-Inch Wide Knobby Tires, 7 Speed Drivetrain, Disc Brakes, Fat Tire Kids Bicycles for Boys Girls

**Brand:** joystar
**Price:** $1525.18
**Availability:** ✅ In Stock

## Summary

> 🚴‍♀️ Gear up, stand out, and ride fearless with JOYSTAR’s fat tire thrill machine!

## Quick Answers

- **What is this?** 20 Inch Mountain Bike for Kids Ages 7-10 Year Old, 3-Inch Wide Knobby Tires, 7 Speed Drivetrain, Disc Brakes, Fat Tire Kids Bicycles for Boys Girls by joystar
- **How much does it cost?** $1525.18 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/448313860-20-inch-mountain-bike-for-kids-ages-7-10-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

- • **Stop on a Dime:** Dual disc brakes provide fast, responsive stopping power for safer rides.
- • **Grip Like a Pro:** Extra-wide 3-inch knobby fat tires deliver unmatched traction on sand, mud, snow, and pavement.
- • **Ready to Ride Fast:** 85% pre-assembled with included tools and backed by a limited lifetime warranty for worry-free fun.
- • **Built for Adventure:** Durable carbon steel frame and non-slip resin pedals with reflectors ensure long-lasting performance and safety.
- • **Conquer Every Trail:** 7-speed twist shifters make uphill climbs effortless and gear changes seamless.

## Overview

The JOYSTAR 20 Inch Mountain Bike is engineered for kids aged 7-10, featuring a sturdy carbon steel frame, 7-speed rear derailleur drivetrain, and 3-inch wide knobby fat tires that excel on all terrains. Dual disc brakes ensure quick stopping power, while twist grip shifters offer smooth gear transitions. Designed for adventurous young riders, it comes 85% assembled with safety reflectors, non-slip pedals, and a limited lifetime warranty, making it the ultimate all-terrain bike for boys and girls ready to explore beyond the pavement.

## Description

This mountain bike is ideal for 7-10 year old kids who want to get some exercise while honing their riding skills. Unlike most single-speed kids' bikes, the JOYSTAR Minifat has more gears and bigger all-terrain knobby fat tires to effortlessly conquer any off-road routes. This is a fat tire kids bike for boys and girls.

## 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 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 | B09Q2QBW64 |
| Additional Features | Disc Brakes, Fat Tire |
| Age Range Description | Big Kid |
| Best Sellers Rank | #176,136 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #226 in Kids' Bicycles |
| Bicycle Drivetrain Type | Derailleur |
| Bicycle Gear Shifter Type | Twist Grip |
| Bike Type | Kids Bike, Mountain Bike |
| Brake Style | Disc |
| Brand Name | JOYSTAR |
| Color | Blue |
| Customer Reviews | 4.0 4.0 out of 5 stars (288) |
| Derailleur Configuration | Rear |
| Frame Material Type | Carbon Steel |
| Included Components | kickstand, reflectors |
| Is Assembly Required | Yes |
| Manufacturer | Sugoo Cycles Ltd. |
| Maximum Weight Recommendation | 100 Pounds |
| Minimum User Height | 48 Inches |
| Model Name | Minifat |
| Number Of Speeds | 7 |
| Number of Handles | 1 |
| Power Source | Pedal power (human energy transferred through a drivetrain) |
| Seat Material | Synthetic Leather or Plastic |
| Size | 20 Inch Wheels |
| Specific Uses For Product | Trail |
| Style Name | Mountain |
| Suspension Type | Rigid |
| Theme | Outdoor Adventure |
| Warranty Description | Limited Lifetime Warranty |
| Warranty Type | Limited |
| Wheel Material | Alloy Steel |
| Wheel Size | 20 Inches |

## Product Details

- **Age Range (Description):** Big Kid
- **Bike Type:** Kids Bike, Mountain Bike
- **Brand:** JOYSTAR
- **Color:** Blue
- **Frame Material:** Carbon Steel
- **Included Components:** kickstand, reflectors
- **Number of Speeds:** 7
- **Special Feature:** Disc Brakes, Fat Tire
- **Suspension Type:** Rigid
- **Wheel Size:** 20 Inches

## Images

![20 Inch Mountain Bike for Kids Ages 7-10 Year Old, 3-Inch Wide Knobby Tires, 7 Speed Drivetrain, Disc Brakes, Fat Tire Kids Bicycles for Boys Girls - Image 1](https://m.media-amazon.com/images/I/71PV0mqVi+L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## 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

## 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 United States of America*
*Store origin: US*
*Last updated: 2026-07-18*