---
product_id: 159739066
title: "Legion BMX Bike, 16, 18 or 20 Inch Bike for Kids and Adults, Hi-Ten Steel Frame, 25x9T, 36x16T or 40x16T Gearing, Black/Teal, Silver, Orange, Red, Green, Black or Light Blue"
brand: "mongoose"
price: "5809 kr"
currency: DKK
in_stock: true
reviews_count: 12
category: "Mongoose"
url: https://www.desertcart.dk/products/159739066-legion-bmx-bike-16-18-or-20-inch-bike-kids
store_origin: DK
region: Denmark
---

# Hi-Ten Steel Frame - durable & tough Aluminum 20" Wheels - lightweight & sturdy Single-Speed Drivetrain - smooth & reliable Legion BMX Bike, 16, 18 or 20 Inch Bike for Kids and Adults, Hi-Ten Steel Frame, 25x9T, 36x16T or 40x16T Gearing, Black/Teal, Silver, Orange, Red, Green, Black or Light Blue

**Brand:** mongoose
**Price:** 5809 kr
**Availability:** ✅ In Stock

## Summary

> 🚀 Own the streets with the Mongoose Legion BMX – where durability meets daredevil style!

## Quick Answers

- **What is this?** Legion BMX Bike, 16, 18 or 20 Inch Bike for Kids and Adults, Hi-Ten Steel Frame, 25x9T, 36x16T or 40x16T Gearing, Black/Teal, Silver, Orange, Red, Green, Black or Light Blue by mongoose
- **How much does it cost?** 5809 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/159739066-legion-bmx-bike-16-18-or-20-inch-bike-kids)

## Best For

- mongoose enthusiasts

## Why This Product

- Trusted mongoose brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Stopping Power:** Steel U-brakes paired with aluminum/resin levers deliver confident, responsive braking.
- • **Custom Fit for Every Rider:** Available in 16, 18, and 20-inch wheels to perfectly match riders from 3'6" to 6'0" tall.
- • **Built to Last, Ready to Blast:** Hi-Ten steel frame engineered for jumps, turns, and everyday BMX thrills.
- • **Effortless Ride, Maximum Control:** Single-speed drivetrain with forged steel crank and sealed bearing cassette for smooth pedaling.
- • **Pro-Level Performance, Beginner Friendly:** Threadless integrated headset and 48mm stem ensure sharp steering with easy assembly.

## Overview

The Mongoose Legion BMX Bike is a versatile, beginner-friendly BMX designed for kids and adults with 16, 18, or 20-inch wheels. Featuring a rugged Hi-Ten steel frame, single-speed drivetrain with forged steel crank, and lightweight aluminum wheels with sealed bearings, it offers smooth rides and reliable control. Its steel U-brakes and integrated headset provide precision handling, while multiple color options and sizes ensure a perfect fit for riders between 3'6" and 6'0". Backed by a 5-year frame warranty, this bike combines classic BMX heritage with modern performance for confident, stylish riding.

## Description

Unleash the fun with the Mongoose Legion Mag, the perfect BMX bike for kids. With 16, 18 or 20-inch wheels, this kids bike is ideal for riders from less than 3'6"" - 6'0"" tall, offering a thrilling way to build confidence and skills. The hi-ten steel frame is tough enough to handle jumps and turns, while the 25x9T, 36x16T or 40x16T gearing keeps the ride nice and smooth. Aluminum mag wheels with sealed bearings ensure you’re on the coolest bike on the block. Alloy rear U-brakes offer reliable stopping power to help support your next trick or stunt. Young riders can feel like BMX pros. Assembly is easy with a few common household tools and the included instruction guide. At Mongoose, we know our roots – as pioneers in BMX and action sports for over 50 years, we're dedicated to delivering an epic ride every time. Get ready to push the limits.

Review: 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.
Review: Great Purchase! - 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!

## Features

- Legion L10 is a great first BMX bikes for beginners with standard 20 Inch wheels, the recommended rider's height is 4'4" to 5'0"
- Durable Hi-Ten steel frame and removable brake mounts with 20” top tube length
- Single speed drivetrain features 170 mm one-piece forged steel crank with a 25T steel chainring and American loose ball bottom bracket
- Wheelset features 20” x 2.25” tires mounted on aluminum single wall 36H rims with 3/8” female axle front hub and 9T cog sealed bearing cassette rear hub
- Steel U-brake and aluminum/resin brake levers provide precision speed control, while the Hi-Ten handlebar and fork are joined by a 48 mm stem and threadless sealed integrated headset for maximum steering performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07W7NYH2B |
| Age Range (Description) | Little Kid |
| Assembly Required | No |
| Best Sellers Rank | #84,349 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #9,812 in Cycling Equipment |
| Bicycle Drivetrain Type | Single-speed |
| Bike Type | BMX Bike |
| Brake Style | U Brake |
| Brand | Mongoose |
| Brand Name | Mongoose |
| Color | Red |
| Customer Reviews | 4.3 4.3 out of 5 stars (4,143) |
| Date First Available | August 6, 2019 |
| Electric Assist Type | Manual |
| Frame Material | High Tensile Steel |
| Frame Size | 20 Inches |
| Frame Type | Rigid |
| Global Trade Identification Number | 00038675187214 |
| Grip Type | Mongoose Mush, 145 mm |
| Included Components | Mongoose Legion L10 Freestyle BMX Bike |
| Item Dimensions LxWxH | 23.62 x 8.66 x 48.82 inches |
| Item Package Dimensions L x W x H | 48 x 23 x 8 inches |
| Item Weight | 12 Kilograms |
| Manufacturer | Pacific Cycle, Inc. |
| Material | Other, Steel |
| Maximum Weight Recommendation | 150 Pounds |
| Minimum User Height | 44 Inches |
| Model Name | Legion Novice |
| Number of Items | 1 |
| Number of Speeds | 1 |
| Package Weight | 15.58 Kilograms |
| Part Number | M41900U20OS-PC |
| Power Source | manual |
| Size | 20-Inch Wheels/L10 |
| Special Feature | Aluminum Frame, BMX, freestyle |
| Specific Uses For Product | Trail |
| Style | Legion L10 |
| Suggested Users | unisex-child |
| Suspension Type | Rigid |
| UPC | 038675187214 |
| Warranty Description | 5-year limited warranty on the frame and a 1-year limited warranty on parts. |
| Warranty Type | Limited |
| Wheel Material | Aluminum |
| Wheel Size | 20 Inches |
| Year | 2020 |

## Product Details

- **Age Range (Description):** Little Kid
- **Bike Type:** BMX Bike
- **Brand:** Mongoose
- **Color:** Red
- **Frame Material:** High Tensile Steel
- **Included Components:** Mongoose Legion L10 Freestyle BMX Bike
- **Number of Speeds:** 1
- **Special Feature:** Aluminum Frame, BMX, freestyle
- **Suspension Type:** Rigid
- **Wheel Size:** 20 Inches

## Images

![Legion BMX Bike, 16, 18 or 20 Inch Bike for Kids and Adults, Hi-Ten Steel Frame, 25x9T, 36x16T or 40x16T Gearing, Black/Teal, Silver, Orange, Red, Green, Black or Light Blue - Image 1](https://m.media-amazon.com/images/I/713yhItci6L.jpg)

## Questions & Answers

**Q: Is there a way to adjust the distance of the handbrake lever to the handle bar? My sons hands can clasp it safely and the screw on the side doesnt do**
A: There is a reach adjustment screw which is a small phillips screw. That'll move that lever closer and further away from the handelbar. Thanks.

**Q: It says this typically ships within 1 to 2 months. How soon should I expect this item to actually ship and will it really take up to 2 months?**
A: I ordered when it was in stock showed up within 3 days.  It could take the whole 2 months, as shipping sucks lately and also the 18" bike has been backordered in multiple brands for a while now.

**Q: Can u put a bigger seat on it so it’s easier to sit and pedal?**
A: I would say so.  It’s a skinny seat for tricks my grandson said.  He’s 9.  Lol

**Q: Why did my bike come with no pedals**
A: Hi. We're sorry to hear that. Within the product's one-year limited warranty, we'd be happy to provide replacements for pedals that were missing. We ask you to please reach out to us at 800-626-2811, Monday-Friday 7 am-6 pm CST. We are also available via DM on Facebook, Instagram, and Twitter. Please have your bike’s model number and date code handy. These can be found on a black and silver sticker on the frame above the pedal area. Warm Regards

## Customer Reviews

### ⭐⭐⭐⭐⭐ Extremely Easy to Assemble. Bike Looks Amazing. M8x1.25 Tap May be Needed.
*by D***E on December 30, 2020*

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.

### ⭐⭐⭐⭐⭐ Great Purchase!
*by E***. on December 28, 2024*

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!

### ⭐⭐⭐⭐⭐ Freestyle
*by T***N on September 21, 2025*

Great bike fun cool wheels outstanding customer support …

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-30*