My Shopping Cart


Free Shipping

Limited time only!












Presidents Day Sale Ends Tonight
Up to 25% Off + Free Shipping

20 Inch Large Bike

698 reviews
With Free shipping

Guardian 20 Inch Large Bike

Age: 6 - 9 years   Height: 45 - 53 inches



Save 20%

Why Kids LOVE Guardian Bikes

Feature icon, Green Checkmark Lightweight Design Created with Lunacy Created with Lunacy

The Guardian Ethos 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.

Feature icon, Green Checkmark SureStop, Easy Reach Brakes Created with Lunacy Created with Lunacy

Feature icon, Green Checkmark Kid Friendly Gear Shifter Created with Lunacy Created with Lunacy

Feature icon, Green Checkmark Kid-specific Geometry Created with Lunacy Created with Lunacy

Feature icon, Green Checkmark Low Step-over Height Created with Lunacy Created with Lunacy

Feature icon, Green Checkmark Adjustable Seat Created with Lunacy Created with Lunacy

Feature icon, Green Checkmark Eye Candy Decals Created with Lunacy Created with Lunacy

Feature icon, Green Checkmark Double-walled Rims Created with Lunacy Created with Lunacy

We Make It Easy on the Parents Too

Free Shipping Icon

Flat Rate Shipping

Shipping is $29 flat, and in-stock orders leave our warehouse within 3-4 business days.

100 Day Test Ride Icon

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.

Charity Icon

Quick and Easy Setup

Get the bike from box to pavement in 5 minutes. So easy a busy parent can do it with ease.

Customer Reviews
4.9 Based on 698 Reviews
5 ★
4 ★
3 ★
2 ★
1 ★
Customer Photos
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
    United StatesUnited States

    Our second great Guardian bike!

    Our son’s first Guardian was the 16” bike, which still fits him, although he’s close to outgrowing it. We’d done a lot of research before that purchase and we were happy to have selected Guardian. Since that bike proved to be a fantastic, well-built bike, we chose the 20” large model as soon as the Guardian sizing tool confirmed that it would fit him. Our son was very excited to get a bike with gears, and when he was asked to review it after several rides, he said (and I quote): “I LOVE it!” This bike, like his first, is well-built, sturdy, and safe. It’s very apparent that Guardian puts much thought into the design and quality of their bikes, and we are very excited that the bikes are now assembled in the United States. Setup upon delivery is very simple and quick, taking only minutes. Lastly, the sizing tool and our interactions with Guardian before the purchase of this bike confirm what we’d found with our first purchase: their top-notch service makes a difference and is another reason why we’ve recommended them to other parents, countless times. If you’re thinking about a bike for a child, Guardian is the best way to go as their focus on kids bikes is woven into the fabric of this great company! This is a rare company that leaves you feeling good about giving them your business.

    United StatesUnited States

    Excellent bike

    Guardian bikes has a great website, excellent customer service, and made me feel confident in the quality and safety of their bikes. I bought a 20” large for my 7 year old who loves it. He said it’s the smoothest bike he has ridden. It’s his first time with gears, and he quickly learned how to use them without any major issues. He also says the breaking system works very well.

    United StatesUnited States

    Best bike I ever bought

    My kids love their Guardian Bikes. Excellent built, super easy to set up out of the box and most importantly, they are sturdy and safe bikes. My kids can’t stop riding them rain or shine. We bought the 14” 16” and now 20”

    Aaron Z.
    United StatesUnited States

    The best, safest bikes for kids!

    This is our second Guardian bike and we couldn't be happier. These bikes are so well-made, easy to assemble, and most importantly, easy and safe to ride for our 6 year old.

    United StatesUnited States


    Kids really love the bikes. I like how easy it is for them to learn to ride their bikes, thank you Guardian.

    With Free shipping

    Training Wheels Compatible

    We recommend using the balance bike method when teaching your child to ride a bike, but understand all children learn differently.

    Compatible training wheels can be purchased here for our 14", 16", and 20" Bikes.

    🎁 Important!

    Guaranteed Holiday Delivery ended at 6:30pm EST, on Friday, December 15th for all in stock bikes.

    For all current in stock bikes, you will see a “May Arrive Before Christmas Badge”. This badge indicates we have inventory ready to ship out.

    Please see transit times below. Note that these are estimated business days, and delays can be expected this time of year. We do not offer expedited shipping at this time.

    Thank you, and happy holidays!

    Bike being assembled

    Assembly Steps

    Step 1: Attach Handlebars

    Step 2: Attach Pedals

    Patented SureStop® Brake System

    • Easier to use – single lever braking

    • Safer to stop – prevents head over handlebar accidents

    • More control – stops faster by balancing front/rear braking automatically

    Kid Friendly Gear Shifter

    • 6-speed twist shifter

    • Red visualizer to help with gear selection

    • Fun and easy way to learn