Search  for anything...
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 4,065 reviews
Condition: New
Checking for product changes
$276.45 Why this price?
Holiday Deal · 8% off was $299.99

Buy Now, Pay Later

As low as $46.08 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 8 left in stock, order soon!
Fulfilled by Amazon
Arrives Tuesday, Dec 31
Order within 19 hours and 30 minutes
Available payment plans shown during checkout

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, Dec 31

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

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
    • Ease of setup
Color: Orange Size: 20-Inch Wheels/MAG
No parts missing.
Reviewed in the United States on December 15, 2024 by John
    • Fast
Color: Green Size: 16-Inch Wheels/L16
fast bike
Reviewed in the United States on November 29, 2024 by The bike has held up great over time.
    • Good with a few issues (Legion)
Color: Red Size: 20-Inch Wheels/LSX
My 8yr old son got the Legion model for Christmas. The assembly wasn't too difficult, but the instructions aren't specific to each model so the exact details are a little vague. The second thing I noticed was that the reflectors are too small to clamp on to this model, so I ordered a generic reflector set to fix. The chainguard was preinstalled but somehow broke on the second day, I removed the guard and the bike works well without it. I was happy that it came installed with a kickstand as that wasn't shown in the image. I also didn't have any trouble adjusting the breaks as others mentioned as a con. Overall I like the bike and think it's a fair value despite my few minor issues. ... show more
Reviewed in the United States on December 27, 2023 by TSM
    • 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
    • I Will NEVER buy another Mongoose
Color: Orange Size: 20-Inch Wheels/MAG
With all of the four and five star ratings, I must be the problem, right? The bike came partially dissembled for shipping purposes. I expected that. What I did not expect was: 1. Missing parts. One of the nuts and both of the washers were missing from the front wheel. Ok. A shipping problem. But what kind of washers do I need to go find? Should be simple. Just read the instructions. 2. Horrible Instructions: For example, to attach the front wheel, I need to follow the appropriate set of instructions depending if my bike's wheel is, "nutted with step retaining washer, nutted with clip retaining washer or quick release". But I don't know which one my bike is; the nut and both washers are missing. Every section is just like this; follow the set of instructions that pertain to your bike. But where does it say if the bike I purchased has a quill stem, a threadless stem, a front load stem or a top load stem? I have no idea. Mongoose has been around for a while. So there are plenty of videos on YouTube. But there are so many configurations for Mongoose bikes, good luck finding the right one. I watched a bunch of videos, went to Wal-Mart (twice) and got $30 worth of nuts, washers, hex drivers and, no I didn't go out and buy the lithium gel they recommended! Then I paid a bike shop $45 to put the thing together because I still couldn't figure it out. The bike shop wouldn't do the brakes because of liability purposes. But they showed me that I needed to loosen a nut and put the brake cable out some. Should be easy, except... 3. CHEAP parts!: I stripped a nut and two screws trying to tighten the brakes just enough to barely work. It's Christmas Eve and I'm soooo frustrated. Should I be worried? Every single step in the instruction book says that if I don't do this step correctly, someone could get seriously injured or killed. Here ya' go son. Have fun! Merry Christmas. I could call Mongoose Customer Support. They are open Monday through Friday 8 to 5; because that's when dads assemble bikes right? Sorry for all of the venting. I've had the bike for a week and I have to say, I have NEVER had this much trouble assembling something that came in a box. I've got $250 invested into a $170 bike and I don't feel safe letting my son ride it. I am not a happy customer. ... show more
Reviewed in the United States on December 25, 2020 by Jared D.
    • 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.
    • Excellent bike for our son
Color: Black/Teal Size: 20-Inch Wheels/L10
We purchased a bike elsewhere and had to return it. This bike has been amazing. It works so well, easy to get put together and great quality for the money. He loves the 'tricks' he can do with this bike and seems to hold up very well, especially since he is at the age where they are pretty hard on their equipment. ... show more
Reviewed in the United States on January 13, 2024 by Mike

Can't find a product?

Find it on Amazon first, then paste the link below.