---
product_id: 729175994
title: "Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20\" Wheels Steel Frame Multicolor"
brand: "mongoose"
price: "$2013"
currency: NZD
in_stock: false
reviews_count: 5
url: https://www.desertcart.nz/products/729175994-mongoose-legion-freestyle-bmx-bicycle-line-for-kids-youth-beginner
store_origin: NZ
region: New Zealand
---

# 20" durable wheels 170mm forged steel crank Hi-Ten steel frame Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor

**Brand:** mongoose
**Price:** $2013
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Own the streets with the Mongoose Legion L20 – where durability meets freestyle freedom!

## Quick Answers

- **What is this?** Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor by mongoose
- **How much does it cost?** $2013 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/729175994-mongoose-legion-freestyle-bmx-bicycle-line-for-kids-youth-beginner)

## 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

- • **Ready for Every Rider:** Designed for youth 4'8"-5'4", this freestyle BMX balances beginner-friendly handling with advanced features.
- • **Smooth Power Transfer:** 170mm one-piece forged steel crank paired with 25T alloy chainring offers a clean, efficient drivetrain.
- • **Built to Last, Ride to Win:** Hi-Ten steel frame with 5-year limited warranty ensures long-lasting durability for every stunt and street session.
- • **Grip the Streets and Parks:** 20" x 2.3" BMX tires on aluminum single-wall rims provide superior traction and rugged performance.
- • **Precision Control at Your Fingertips:** Aluminum U-brakes and brake levers deliver smooth, reliable stopping power for confident riding.

## Overview

The Mongoose Legion L20 is a 20-inch freestyle BMX bike crafted with a durable Hi-Ten steel frame and a high-performance drivetrain featuring a 170mm forged steel crank and 25T alloy chainring. Designed for youth riders between 4'8" and 5'4", it offers precision control with aluminum U-brakes and rugged traction via 2.3" BMX tires on aluminum rims. Backed by a 5-year frame warranty, this bike is built to handle park, street, and dirt riding with confidence and style.

## Description

For 45 years, Mongoose has been in the soil, down the trail and riding the ramp. In the Legion series, Mongoose offers a full line of freestyle BMX bikes for riders of all ages and ability. The Legion L20 is designed as a BMX bike for the park, street, and dirt worthy. The Legion L20 features a Hi-Ten steel frame (20.25" top tube), a tapered head tube, and a removable brake mount. The L20 Hi-Ten Steel 8" Rise Handlebar and 48mm Stem are designed for precision riding, the wide aluminum single wall 36H rim and 2.3" BMX tires provide grip and durability. 25 x 9T gear with one piece tubular chromoly 170mm hollow spindle crank and American loose ball bottom bracket provides a clean, reliable drivetrain. Alloy U-brakes with alloy brake levers provide speed control, Hi-Ten Steel BMX forks and 1-1/8" threadless steerers and tapered legs for maximum performance. This bike comes ready to build. Frame comes with a 5 year limited warranty and 1 year limited warranty.

Review: I got it retailed for quite of a good deal below $400. And I’ve been using this BMX for a solid 3 months here and there and it doesn’t really disappoint, as long as you greased the metal parts, it’s smooth as butter The instructions on the brakes could and bearings of the handle could be more accurate and clearer though And the bikes itself seems to be a little heavier than a typical BMX. That’s the only issue I ahve with it, the weight. But nonetheless it’s overall a decent bike
Review: This bike delivered quickly and well packaged. It requires a bit of assmbly but instructions were clear and assembly time was relatively short. The bike is well made, rugged and has some quality components on it for this price point. We waited for a number of trips to the indoor bike park to be completed and I have to say, it has been out through it's paces, to say nothing about it having suffered a number of gnarly dumps and it is still doing it's thing and not looking bad, save a few scars. If you have someone in the family that is starting out or looking to step up from a "cheap" BMX styled bike, this model is an excellent option. Definitely recommended.

## Features

- The L20 is a stylish freestyle BMX bike that offers everything that beginner riders need to get out of the street and get out of the curves. Recommended rider height is 4'8"-5'4"
- Hi-Ten steel frame, removable brake mount, top tube length is 20.25" and will last for a long time
- It boasts a high-performance drivetrain with a 170mm one-piece forged steel crank, 25T alloy chain ring, and American loose ball bottom bracket
- Wheelset features a 20" x 2.3" tire mounted on aluminum single wall 36H rim with a 3/8" female axle front hub and 9T cog seal bearing cassette rear hub
- Aluminum U-brakes and brake levers provide precise speed control, Hi-Ten steel handlebars and forks are combined with 50mm stem and threadless sealed integrated headsets for maximum steering performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07W5L32P9 |
| Batteries Included | No |
| Color | blue |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,019) |
| Date First Available | November 24, 2019 |
| Material | Steel |
| Maximum Weight Recommendation | 113.4 kg |
| Model Number | M41800U10OS-PC |
| Number of Speeds | 1 |
| Product Dimensions | 60 x 22 x 124 cm; 12 kg |
| Size | 20-Inch Wheels L20 |
| Style Features | Sporty |
| Target Audience | Women's |
| Usage | Trail |
| Wheel Size | 20 Inches |

## Product Details

- **Age Range (Description):** Big Kid
- **Bike Type:** BMX Bike
- **Brand:** Mongoose
- **Color:** blue
- **Number of Speeds:** 1

## Images

![Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor - Image 1](https://m.media-amazon.com/images/I/51MX3y4MqhL.jpg)
![Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor - Image 2](https://m.media-amazon.com/images/I/61l3PCXd5kL.jpg)
![Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor - Image 3](https://m.media-amazon.com/images/I/7104vNsT9jL.jpg)
![Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor - Image 4](https://m.media-amazon.com/images/I/716zFGZj9iL.jpg)
![Mongoose Legion Freestyle BMX Bicycle Line for Kids Youth Beginner to Advanced 20" Wheels Steel Frame Multicolor - Image 5](https://m.media-amazon.com/images/I/71AmyYF5thL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐ Review
*by F***E on May 17, 2024*

I got it retailed for quite of a good deal below $400. And I’ve been using this BMX for a solid 3 months here and there and it doesn’t really disappoint, as long as you greased the metal parts, it’s smooth as butter The instructions on the brakes could and bearings of the handle could be more accurate and clearer though And the bikes itself seems to be a little heavier than a typical BMX. That’s the only issue I ahve with it, the weight. But nonetheless it’s overall a decent bike

### ⭐⭐⭐⭐⭐ Review
*by B***N on February 19, 2023*

This bike delivered quickly and well packaged. It requires a bit of assmbly but instructions were clear and assembly time was relatively short. The bike is well made, rugged and has some quality components on it for this price point. We waited for a number of trips to the indoor bike park to be completed and I have to say, it has been out through it's paces, to say nothing about it having suffered a number of gnarly dumps and it is still doing it's thing and not looking bad, save a few scars. If you have someone in the family that is starting out or looking to step up from a "cheap" BMX styled bike, this model is an excellent option. Definitely recommended.

### ⭐⭐⭐⭐⭐ Review
*by A***S on October 24, 2020*

This Legion L20 is the third Mongoose BMX bike I've purchased over the last year, and I've been very happy with all three (Legion LSX, Title Pro, and L20). Assembly was very easy on all three bikes; just need to attach the front wheel, handle bars, and pedals. Took only about 15 mins. You just need to pay attention to the direction of the forks and remember the left pedal will be left-hand threaded. The forks and pedals have stickers denoting front/rear, left/right. Besides adjusting for height and putting air in the tires, there really wasn't any need for fine adjustments (chain tension, brakes, misc. nuts, etc.), as these things are being adjusted correctly from the factory (nice surprise). After reading the negative reviews on this bike and the others mentioned, it seems many of them are related to incorrect user assembly. If you put the forks on backwards or don't put air in the tire, you're going to have problems. The Legion L20 is reasonably light at roughly 25 lbs., easy to ride, and looks great. Note, however, that this is a freestyle bike, and probably not the best choice if you're just looking for a neighborhood cruiser. The crank bracket sits about 1" higher than on a race type BMX bike, making the apex pedal feel too high when in a sitting position. This may not bother some people. If it does, you could buy shorter cranks, but with the money you'd spend, it would be more logical to just go with a race style bike with the lower bracket (and larger front sprocket). The Title series with a lengthened seat post makes for a great lightweight cruiser. Not much to complain about on this bike. Excellent quality for the money. If you're looking for a reasonably priced freestyle bike with good quality, at $156, this is a great choice.

## Frequently Bought Together

- Mongoose Legion Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing
- Zelerdo 2 Pairs Aluminum Alloy Bike Pegs for Mountain Bike Cycling Rear Stunt Pegs Fit 3/8 inch Axles
- Mongoose Legion Freestyle BMX Bike for Advanced-Level or Professional Riders, Adult Men Women, 4130 Chromoly Frame, and 20-Inch Wheels

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-15*