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JOYSTAR

JOYSTAR 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

  • Based on 289 reviews
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Availability: 19 left in stock
Fulfilled by Amazon
Arrives Monday, Aug 17
Order within 15 hours and 10 minutes
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Color: Black


Size: 20 Inch Wheels


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

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.

Bike Type: Kids Bike, Mountain Bike


Age Range (Description): Big Kid


Brand: JOYSTAR


Number of Speeds: 7


Color: Black


Wheel Size: 20 inches


Frame Material: Carbon Steel


Suspension Type: Rigid


Special Feature: Disc Brakes, Fat Tire


Included Components: Kickstand, Reflectors


Bike Type: Kids Bike, Mountain Bike


Number Of Speeds: 7


Suspension Type: Rigid


Additional Features: Disc Brakes, Fat Tire


Brake Style: Disc


Specific Uses For Product: Mountain


Power Source: Pedal power


Bicycle Gear Shifter Type: Twist Grip


Gear Type: derailleur


Intended Riding Terrain: Mountain Terrain, Unpaved Trails


Derailleur Configuration: Rear


Bicycle Drivetrain Type: Derailleur


Number of Handles: 1


Wheel Size: 20 inches


Size: 20 Inch Wheels


Item Weight: 13.15 kg


Warranty Type: Limited Lifetime Warranty


Maximum Weight Recommendation: 150 pounds


Minimum User Height: 48 inches


Age Range Description: Big Kid


Brand Name: JOYSTAR


Included Components: Kickstand, Reflectors


Model Name: Minifat


Model Year: 2021


Manufacturer: Sugoo Cycles Ltd.


Warranty Description: Limited Lifetime Warranty


Color: Black


Style Name: Mountain


Frame Material Type: Carbon Steel


Wheel Material: Alloy Steel


Seat Material: Vinyl


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Aug 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Great kids bike
Color: Blue Size: 20 Inch Wheels
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.
Reviewed in the United States on February 15, 2026 by Dani Montgomery
    • Mountain Bike
Color: White Size: 20 Inch Wheels
We bought this Bike for our Granddaughter and she loved it! Easy to put together! And shes in love!
Reviewed in the United States on September 5, 2025 by Doug Jordan
    • Struggle Assembling Bike
Color: Black Size: 20 Inch Wheels
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. ... show more
Reviewed in the United States on December 25, 2025 by White, Lelia
    • Great value for first mountain bike
Color: White Size: 20 Inch Wheels
It is early, but my daughter loves this bike. This is her first "mountain bike", but like many kids her largest hill to climb will probably be a gradual 10' pavement incline. The gear shift is pretty simple and a great starting spot for kids. I did have it "assembled" for $50 at my local bike shop. More specifically, I put the frame together (which was easy) and had them finalize the brakes. In my experience, getting the brakes right for any bike could always use a professional touch. If you go to a local bike shop, a beginner mountain bike is like $500. This is a nice price point for the suburbia bike rider and we can always upgrade once she grows out of this one. I did just hear about whoop bikes after the fact and would have considered that had I known...but too late now. Overall, great value for this beginner mountain bike for kids. ... show more
Reviewed in the United States on December 30, 2022 by ErniePants
    • Stay away
Color: White Size: 20 Inch Wheels
I normally don't have time to write reviews about products but this bike was a total disappointment. For starters it weights more than my adult 27.5 mountain bike and that says a lot. The frame is made out of cheap steel. The rotors both came bent straight out of the box which I might add came in pieces as well. Totally destroyed during shipping process. The cheap bottom bracket was cross threaded damaging the frame and within time the bearings inside. Big scratches on the down tube of the bike and fork. Front wheel hub was super tight I had to place it on a vice to losen up the cones for it to run freely. The accessories box containing the pedals and other miscellaneous items camed destroyed as well. The headset was not set up properly either, it was too tight so you couldn't turn the handle bars. This bike was a mess so I shipped it back. Honestly had to go to a bike shop to get a bike box to ship the original bike box that's how bad of a shape it was. I wasn't gonna let my daughter ride this death trap on wheels. ... show more
Reviewed in the United States on May 9, 2024 by Reny Navarro
    • Too heavy for a kid
Color: Blue Size: 20 Inch Wheels
Bike looks great but it is a bit heavy
Reviewed in the United States on January 24, 2026 by Reina
    • Quality bike
Color: White Size: 20 Inch Wheels
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. ... show more
Reviewed in the United States on May 9, 2023 by Nora busch
    • No a good starter bike. 2 year review.
Color: White Size: 20 Inch Wheels
Although the bike was well packaged and easy to assemble, it is not a good bike for kids. The geometry is off, almost feels like a bmx bike design adopted to a kids bike. It fails miserably. 1) Rolling properties of the bike are less than ideal. 2) Hard to pedal and not well balanced. 3) The chain comes off every few gear. Shifts. The derailleur goes out of tune very often. 4) Bad shifting g problems ... show more
Reviewed in the United States on May 11, 2026 by Just stuff

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