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Mongoose

Mongoose Legion Kids Freestyle Sidewalk BMX Bike, Beginner Riders, Boys and Girls, 16-20-inch Wheels, Hi-Ten Steel Frame, Micro Drive BMX Gearing

    • Based on 4,093 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Feb 25
Order within 11 hours and 24 minutes
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Color: Silver/Mag


Size: 20-Inch Wheels/MAG


Features

  • Legion Mag sturdy frame and fork made from High-Ten steel, rider height recommendation 4'8" to 5'4" inches tall
  • 40x16T gearing and 1-piece forged steel 170mm cranks provide a smooth and efficient ride, making it the ideal choice for riders who want a straightforward and dependable single-speed bike
  • Upgrade your bike with cast aluminum mag wheels featuring sealed bearings, combining style and performance for a smooth and stylish BMX ride
  • Cable detangler for 360 degree handlebar spins and alloy rear U-brakes for secure stops
  • Comes with kickstand, chain guard, and 4 freestyle pegs

Description

For 45 years, Mongoose has been in the dirt, down the trails, and on the ramps. With the Legion Series, Mongoose offers a full line of freestyle BMX bikes for riders of all ages and ability levels. The Legion L10 is designed to be a great introduction into the world of BMX. The Legion L10 features a full Hi-Ten steel frame (20” top tube) and removable break mounts. The L10 Hi-Ten steel 8” rise handlebar and 48mm stem are designed for precision riding, while the aluminum single wall 36H rims and 2.25” BMX tires offer grip and durability. The 25x9T gearing with one-piece tubular chromoly 170 mm hollow spindle cranks and American loose ball bottom bracket offer a clean, reliable drivetrains. A steel U-brake with aluminum/resin brake levers provide speed control, while the Hi-Ten steel BMX fork with 1-1/8" threadless steerer helps maximize performance. This bike ships ready to be assembled and comes with a 5-year limited warranty on the frame and a 1-year limited warranty on parts.

Bike Type: BMX Bike


Age Range (Description): Little Kid


Brand: Mongoose


Number of Speeds: 1


Color: Silver/Mag


Wheel Size: 20 Inches


Frame Material: Alloy Steel


Suspension Type: Rigid


Special Feature: freestyle, Aluminum Frame, BMX


Included Components: Kickstand, Chain Guard, Mongoose Legion Mag Bike, Freestyle Pegs


Bike Type: ‎BMX Bike


Age Range (Description): ‎Little Kid


Brand: ‎Mongoose


Number of Speeds: ‎1


Color: ‎Silver/Mag


Wheel Size: ‎20 Inches


Frame Material: ‎Alloy Steel


Suspension Type: ‎Rigid


Special Feature: ‎freestyle, Aluminum Frame, BMX


Included Components: ‎Kickstand, Chain Guard, Mongoose Legion Mag Bike, Freestyle Pegs


Size: ‎20-Inch Wheels/MAG


Brake Style: ‎Linear Pull


Specific Uses For Product: ‎Road


Item Weight: ‎34.23 Pounds


Style: ‎Mag


Model Name: ‎Legion Novice


Assembly Required: ‎Yes


Skill Level: ‎Beginner


Global Trade Identification Number: ‎36


UPC: ‎038675172036


Manufacturer: ‎Pacific Cycle Inc.


Item Package Dimensions L x W x H: ‎48.5 x 23 x 8 inches


Package Weight: ‎17.92 Kilograms


Brand Name: ‎Mongoose


Warranty Description: ‎Limited Lifetime


Material: ‎Steel


Suggested Users: ‎unisex-child


Number of Items: ‎1


Part Number: ‎M41708M60OS-PC


Sport Type: ‎Cycling, Outdoor Lifestyle


Date First Available: November 28, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Feb 25

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

    • Extremely Easy to Assemble. Bike Looks Amazing. M8x1.25 Tap May be Needed.
Color: Orange Size: 20-Inch Wheels/MAG
Review Image by Dave Dave
Review Image by Dave Dave
Review Image by Dave Dave
Review Image by Dave Dave
Review Image by Dave Dave
Review Image by Dave Dave
The bike from the pictures looked pretty cool. I didn't realize how beautiful this bike would be until it came in the mail. I purchased the Legion Mag in orange for my 8 year old. It was great to see his reaction on Christmas when receiving this bike. He was so excited. I read some other reviews from reviewers who had complaints on the difficulty of assembling the bike and in my opinion the people having trouble assembling the bike must be blatantly ignorant or illiterate. The instructions for assembly are written so a teenager could assemble this bike, with clearly labeled diagrams and more in depth explanations than what is necessary for assembly. The instructions on assembly are excellent and I had almost no trouble assembling the bike without them until it came to adjusting the brakes. I assembled the entire bike without instructions except for the brakes because it is just self explanatory. I was also able to assemble the brakes without any trouble or needing the instructions although I did refer to them for proper adjustment and alignment protocols. The only issue I had when assembling the bike is when I got to the point of attaching the handlebars to the handlebar binder assembly attached to the stem. The four socket cap screws that tighten down on the handlebar binder bracket would not thread easily. I felt as though I would break the screws or destroy the threads if I attempted to tighten them down far enough to grip the handlebars. There was too much paint in the threaded holes and also the tolerances on the machining of the threads was not great. I have included some pictures showing just how much paint was removed from tapping and also chips from burs in the threaded holes from poor tolerance drilling and tapping at the factory. In order to fix this problem I grabbed a tap handle and a M8x1.25 normal thread tap and tapped the holes. I would give this bike a 4.9 out of 5 if I could just because I needed to tap these holes and a tap was not listed as a required tool. I don't think many people will have problems assembling the bike even if they have this issue and need to tap the four holes as these are the only holes that need anything to be screwed into. Honestly if you don't at the very least know how to use a tap and die set you probably shouldn't be assembling a bike as it's not safe to do so if you're not familiar with basic tools. You could wind up hurting your child from pure negligence if you don't know how to use basic hand tools to assemble this bike properly. My suggestion is that you take it to a local bike shop and pay $30-$40 to have them assemble the bike and adjust the brakes if you don't know what you are doing. I assume some people who buy this bike will do just that with the majority of people knowing how basic hand tools work and them being able to assemble it themselves. Overall the bike is amazing, my son loves it, it was extremely easy to assemble, and I recommend you tap the holes on the handlebar binder even if it doesn't need it as it will allow you to make a more secure connection. Please don't listen to people complaining about difficult assembly as it was extremely easy even the detangler brakes something of which I've never seen or dealt with on a bike before. The instructions are very clear on how to hook the brakes up and how to adjust them properly and I was actually surprised how easy it was to assemble the brakes because I was expecting something very difficult based on the reviews but it turns out these brakes are easier to assemble than normal brakes. ... show more
Reviewed in the United States on December 30, 2020 by Dave Dave
    • Awesome Bike!
Color: Silver/L18 Size: 18-Inch Wheels/L18
I bought this bike for my 6 year old grandson. He loves riding it. I even tried it out myself. Very sturdy with easy assembly. Mongoose still makes a great product. I'm sure I will be purchasing more Mongoose BMX bikes in the future.
Reviewed in the United States on July 28, 2024 by Mimi
    • Go B Go
Color: Silver/L18 Size: 18-Inch Wheels/L18
Easy to put together, perfect fit for 6 year old, color and look were outstanding. Brakes were only on Front wheel which surprised me but worked perfectly.
Reviewed in the United States on January 11, 2025 by HorsemanWili
    • The breaks in this bike are tricky!
Color: Red Size: 20-Inch Wheels/L10
My son really loves this bike but the only sucky thing is that the brakes failed pretty quickly. It wasn't the pads either it was something to do with the break line itself so we had to buy new brake line kit but they only had like two options on Amazon and we could only use a few pieces from the new kit we bought so that made things even worse. The brakes on this bike are tricky and although it’s been a pretty great bike besides the breaks I would definitely buy something different next time. ... show more
Reviewed in the United States on January 21, 2025 by Elizabeth
    • Great Purchase!
Color: Black/Teal Size: 20-Inch Wheels/L10
I had no previous experience with this brand of bikes before this, but bought this and two others as Christmas gifts. Wow!! My kids love these bikes! Well made, easy to assemble, great value. The first day my kids were ready to ride several miles on these bikes. The thicker tires made it easy to go over multiple types of terrain. Everything is just really well made and put together. Super stoked about this purchase and the two others! ... show more
Reviewed in the United States on December 28, 2024 by E. S.
    • Bike arrived with mechanical issues but Mongoose wouldn’t help
Color: Red Size: 20-Inch Wheels/L10
The bike came missing a seat post clamp. Additionally, the brake cables were frayed and the brakes themselves were completely stuck. I contacted Mongoose for help. However, Mongoose said they did not have the seat post clamp in stock. I’m not a bike mechanic myself, so needed to get the brakes fixed by a local bike shop. Mongoose wouldn’t reimburse any of this expense either. In total, it cost me $50 in extra expenses to get this bike rideable for my son and I had to pay all of it. I am very disappointed as Mongoose just gave me excuses why they couldn’t help me. I was thinking that Mongoose would have taken at least partial responsibility for sending me a bike in this condition, but I was mistaken. They did not stand behind their product at all. Other than these issues, this seems like a solid bike overall with good frame geometry. I hope that other people who buy this bike have a much better experience than what I had. ... show more
Reviewed in the United States on January 26, 2025 by Amazon Customer
    • Good bike
Color: Silver/L18 Size: 18-Inch Wheels/L18
Don’t be afraid of putting it together, it really easy it took about 10 minutes. Unboxing to longer
Reviewed in the United States on October 11, 2024 by Nathan S.
    • Kids bike
Color: Orange Size: 20-Inch Wheels/MAG
My son loves this bike highly recommend. Easy to put up and buff the kids go.
Reviewed in the United States on February 14, 2025 by Darin Flores

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