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 1775 Reviews)
4.9

Based on 1,841 Reviews
Age: 6 - 9 years Height: 45 - 53 inches

SureStop® Brake System
Balance Bike Method Compatible

Kid Friendly Gear Shifter
Training Wheels Compatible
Why Kids LOVE Guardian Bikes
Lightweight Design
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SureStop, Easy Reach Brakes
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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
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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
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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
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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
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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
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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
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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
Flat Rate Shipping
Shipping is $29.99 flat, 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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A perfect upgrade for my 6 year old!
I want to make specific mention of the great customer service provided over the phone by Tracie. My daughter's measurements fell right in between the 20-inch and 20-inch large models, and Tracie gave me some advice that proved to be valuable in informing my decision. Since I am driving distance from the Sacramento warehouse, she even offered to coordinate a visit to see about fitting in person. After our conversation, she contacted the folks there, who were also very accommodating, and called me back to follow up. Above and beyond! As far as the bike is concerned, we are very pleased with everything that we received, and my daughter loves that she can now ride faster than I can sprint alongside her. The gears are a little difficult for her to shift, but this has not hampered her enthusiasm. We would absolutely recommend this product and company!

Early Review
Great experience so far. Extremely easy to put together, very sturdy frame, son has yet to be able to get out on it much due to weather, but his eyes lit up when he saw it.

Good so far
Easy to get going, good quality.

OMG
Probably the best present ever. She learned on an old 16" single speed w/coaster brake. Took right to the hand brake (best invention ever - single lever, back and front brake design). Several days later is using the gear shift like a pro. So far it seems like a very well made bike. We can't wait to have her ride with us down to the river at the end of the road.

Just as advertised!
We couldn't be happier with our experience with Guardian! As advertised, our 7 year-old was riding without training wheels in less than a day. The most difficult part of the experience was waiting for a day that it wasn't raining, or snowing. We live in New England... and it was March. The bikes are very will designed (the breaking system is brilliant), super sturdy, and easy to ride. 2 big thumbs-up!