The Guardian 20 Inch Large Bike has a lightweight steel frame, making it easy to control while still durable enough to outlast your kid. Like every Guardian bike, it’s kid-tested to be safe and fun to ride.
20 Inch Large Bike
Guardian 20 Inch Large Bike
4.9 (Based on 898 Reviews)
Age: 6 - 9 years Height: 45 - 53 inches
Product price:
SureStop® Brake System
Balance Bike Method Compatible
Kid Friendly Gear Shifter
Training Wheels Compatible
Why Kids LOVE Guardian Bikes
Lightweight Design Learn more about
SureStop, Easy Reach Brakes Learn more about
With SureStop, there’s only one brake lever, so your kid can’t get confused when things happen fast. Our patented brakes won’t ever flip the bike, and the lever is in just the right place for kid-size hands.
Kid Friendly Gear Shifter Learn more about
Our unique gear shifter is designed to make shifting easy with a simple twist function and a red visualizer that changes its position depending on which gear your child is in.
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Kid-specific Geometry Learn more about
Kids don’t just need smaller bikes. They need different bikes. With all the right proportions. They need smaller grips. They need less distance between the pedals. They need shorter crank arms and a low center of gravity. All Guardian bikes are designed for kids, from the ground up.
Low Step-over Height Learn more about
The low cross bar makes our bikes easy to get on, and a lot safer if your kid comes off their seat in a hurry.
Adjustable Seat Learn more about
Every Guardian bike seat is both easily adjustable and easy to lock down. You can adjust the height to fit your kid as they grow up with the bike.
Eye Candy Decals Learn more about
Our bike colors and designs were developed by kids, for kids, to make our bikes the coolest bikes on the block. Our Guardian 20 Inch Large Bike line uses water-transfer decals with a clear coat finish, giving the whole bike a polished shine.
Double-walled Rims Learn more about
Our double-walled rims can stand up to the extreme beating of a kids’ bike without bends, dents, or buckles. Even under the weight of a grown man. We tested it. A bunch of times.
We Make It Easy on the Parents Too
Fast and Free Shipping
Shipping is free, and in-stock orders leave our warehouse within 1 business day.
365 Smooth Ride Guarantee
We want to make sure the bike is perfect for your family, so we give you a FULL YEAR to test it out.
Quick and Easy Setup
Get the bike from box to pavement in 5 minutes. So easy a busy parent can do it with ease.
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Great purchase
Bought for my daughter’s 9th birthday. She has had anxiety about riding bikes without training wheels. I told her this one didn’t come with training wheels. We used as a balance bike for a couple days and then put on pedals. Assembly was completely a breeze. She was riding so fast! The rest of my kids want a Guardian bike as well now, since it is such a smooth and easy ride.
Easy Assembly
Assembly was easy as most of the bike was already assembled.
Granddaughter loved her new bike!
Nine year old Granddaughter received her Guardian bike. It was her first. She learned to ride the bike in just 3 tries! Should have seen the huge smile on her face as soon as she mastered the ride. Buy Made in America!
Acceptable if you are mechanically inclined
Unboxing and assembling this bike was easy enough to accomplish. Generally it's built well, and seems like it'll be a nice bike. Out of box the derailleur was adjusted so badly if you started peddling the chain would immedialty eject itself from the cassette. The upper and lower limits weren't set at all, and the cable was completely loose so the tension needed adjusting. This is the first bike I've bought to include really inexpensive models and $2000+ models that needed this much adjustment upon delivery. The bike is nice enough but for the premium cost a functional product upon delivery would be nice. I knew how to make the required adjustments and it works just fine now, but for someone who doens't know how to do so it would be really frustrating. I wouldn't recommend a guardian bike with gears to someone that either doesn't already know how to adjust the derailleur or isn't willing to learn.
Guardian Bikes
Hi Jon, I'm so sorry to hear that the derailleur on your new bike needed to be adjusted right out of the box. This is certainly not the experience we strive for as every bike should arrive in perfect condition and ready to ride. I'm curious if you noticed any damage to the shipping box and if you have any photos of the bike when it arrived for our team to take a look at. We're always looking to improve so any further details and feedback would be appreciated. Thanks so much! Laura @Guardian
From Struggling to Soaring: The Perfect Bike for New Riders!
I couldn’t be happier with our new Guardian bike! After seeing an advertisement and reading so many impressive reviews, I decided to give it a try for my 8-year-old. She had struggled to learn how to ride a two-wheeler on her old bike, but Guardian made all the difference. On her first ride, we removed the pedals so she could practice balancing. By the next day, we put the pedals back on, and within less than an hour, she was riding confidently! On day three, she even mastered taking off on her own. Now, we’re enjoying family bike rides together and recently completed a 5-mile ride—a huge milestone for her! She absolutely loves the bike’s color and the matching helmet, and we’re planning to add fun accessories like a bell and water bottle soon. Guardian bicycles have exceeded our expectations, and I highly recommend them to any parent looking for a safe, well-designed bike for their child.