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🔥 Own the streets with the coolest kid’s BMX bike on the block! 🚲
The Mongoose Legion Kids Freestyle Sidewalk BMX Bike is a beginner-friendly BMX designed for riders between 3'6" and 6'0" tall. Featuring a durable hi-ten steel frame, 20-inch aluminum mag wheels with sealed bearings, and a reliable 40x16T micro drive gearing system, it offers a smooth, stylish, and safe ride. Equipped with alloy rear U-brakes for secure stopping, this bike is perfect for neighborhood cruising and skatepark tricks. Backed by Mongoose’s 50+ years of BMX heritage, it’s the ultimate first bike for young riders ready to ride like pros.

















| ASIN | B01LVXNPK7 |
| Additional Features | Aluminum Frame, BMX, freestyle, off road |
| Age Range (Description) | Little Kid |
| Age Range Description | Little Kid |
| Best Sellers Rank | #51,196 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #96 in Kids' Bicycles |
| Bicycle Drivetrain Type | single-speed |
| Bike Type | BMX Bike |
| Brake Style | U Brake |
| Brand | Mongoose |
| Brand Name | Mongoose |
| Color | Orange |
| Customer Reviews | 4.4 out of 5 stars 4,023 Reviews |
| Derailleur Configuration | Rear |
| Frame Material Type | Alloy Steel |
| Global Trade Identification Number | 00038675090927 |
| Included Components | Bicycle |
| Intended Riding Terrain | BMX Terrain, Urban Terrain |
| Item Type Name | Freestyle Sidewalk BMX Bike |
| Item Weight | 32 pounds |
| Manufacturer | Pacific Cycle, Inc. |
| Maximum Weight Recommendation | 250 pounds |
| Minimum User Height | 56 inches |
| Model Name | Legion Novice |
| Model Number | M41707M70OS |
| Number Of Speeds | 1 |
| Number of Handles | 2 |
| Number of Speeds | 1 |
| Power Source | Pedal power (human energy transferred through a drivetrain) |
| Size | 20-Inch Wheels/MAG |
| Skill Level | Beginner |
| Specific Uses For Product | BMX |
| Style Name | Mag |
| Suspension Type | Rear |
| UPC | 038675090927 |
| Unit Count | 1 Count |
| Warranty Description | Limited Lifetime |
| Warranty Type | Limited |
| Wheel Material | Alloy Steel |
| Wheel Size | 20 inches |
B**Y
GREAT BIKE! HIGHLY RECOMMEND.
I assembled it today and it took 20 minutes tops. If you have ever assembled anything before then it should be fairly easy. I didn't open the manual for instructions besides confirming my suspicion of which direction the large washers with the raised ridge were orientated. The raised edge goes inwards towards the forks FYI. The brakes were very easy to adjust, I seen reviews stating how difficult they were to adjust or setup. Not sure why but they couldn't be a more basic setup. I also recommend making sure the bearings in the fork tube are not to tight. The ones on the bike I received were WAY to tight and you could physically feel individual bearings moving when you turned the handlebars. After adjusting accordingly it moves nice and smooth. I saw a review that their stalk broke and this could be why it broke. If they are to tight you can damage them and eventually the stalk as well. I definitely recommend this kids freestyle bike. Brings back memories of my bmx bikes back in the 80's. The orange color is awesome as well. Especially since my grandson is a big Oregon State beavers fan.
D**E
Extremely Easy to Assemble. Bike Looks Amazing. M8x1.25 Tap May be Needed.
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.
B**S
Amazing Color!!!
Great product, my son is happy. It just remains to try it on the street.
J**7
It's nice...
My 5 ½ year old boy is a little bit taller & thicker than most of his peers & the bike is almost too big for him but that was kind of the goal when deciding to upgrade his BMX. He was way to big for his first peddle BMX bicycle, so it's nice he'll grow into this one & he really seems to be enjoying it. I did throw a front brake on there just because I had one laying around that fit perfectly but tbh I adjust that to where it barely grabs because we're not too keen on him doing an indo & knocking his teeth out. There's no peddle brake on this bike, so if you're going from a bigginner bike, that almost always have the rear peddle brake, just be aware this has a hand brake, it does require large enough hands to reach it, & a bit of strength to get the brake to engage. All in all, so far, it's a nice BMX for a 5 ½ to say up to about 7 or 8 years old depending on how big a kid. I wouldn't consider this a beginner bicycle, it's more of a 2nd or 3rd bicycle not a 1st IMO.
L**A
Great bike
My son, absolutely loved this bike when he received it, and it was put together, the bike was perfect for his size. It rode very smooth and I feel like I got what I paid for unfortunately after moving into our new place, the bike was stolen from our backyard
T**S
Good quality Bike
Great Bike for a beginner and a leap above Huffy and Walmart bikes. I remember Mongoose being a Good recognizable brand decades ago. This bike was easy to assemble. I think it took an hour to unbox and put together. Box was damaged heavily, but bike was packed so well with foam and wrapping that there wasn't a single scratch. The most important part is the kid is happily surprised and liked the color.
V**N
Reason they sell Mongoose at Walmart..
Update: dropping this from 2 to 1 star, complete junk. Front tire doesn't take air, needing to go buy new tube. Once rear tire has air, it rubs on the brake controller that cannot be moved.. Will need lower profile tires on top of the seat post already replaced. BE PREPARED TO PUT ANOTHER $50 into this bike just to use it!!! I wanted better model than walmart was selling, doesnt seem any better. Seat post is 7 inches long, all the way up its 1ft from crank shaft in up position!! Really, my normal sized 11 year old has his legs almost 40 degrees higher than parallel when pedaling.. This isnt a 16 inch bike, 350mm post on way. Bottom of 360 rotor was bent on 1 end from transit damage, bent back enough to attach brake cable. The so called foot pegs are a joke, they are smooth!! If a kid actually used them, they would slip off and break their foot. Rear brake setup is as lame as most reviewers state, cant even put old school pad on frame..
I**S
A very happy kid!!
Mya nephew was very happy......
J**R
Works perfectly fine. Make sure to measure yourself to know if ...
Works perfectly fine. Make sure to measure yourself to know if you fit this size model. Bike looks nice and had no issues being put together. The break could be a little bit better but I can upgrade that later if it fails. No back pedal brake.
J**.
Excelente calidad del producto
me encanta el producto
H**A
Excelente calidad
Me gustó mucho el diseño color , es claro que tiene calidad en sus componentes
O**.
Excelente calidad y precio para niños bmx
Excelente calidad precio
H**M
Fast delivery and excellent quality
Mongoose was the benchmark at my youth days and still rocking it. Got it for my son the bike is of excellent quality and came quickly
Trustpilot
3 days ago
1 month ago