---
product_id: 72307474
title: "Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels with 4 Axle Pegs, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, Black"
brand: "mongoose"
price: "$1794.93"
currency: USD
in_stock: true
reviews_count: 13
category: "Mongoose"
url: https://www.desertcart.us/products/72307474-legion-l20-kids-freestyle-bmx-bike-intermediate-rider-boys-girls
store_origin: US
region: United States of America
---

# Micro Drive 25x9T BMX gearing 20-inch durable wheels Hi-Ten steel frame strength Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels with 4 Axle Pegs, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, Black

**Brand:** mongoose
**Price:** $1794.93
**Availability:** ✅ In Stock

## Summary

> 🚀 Own the ramps, streets, and trails with the Mongoose Legion L40 — where every ride is a statement.

## Quick Answers

- **What is this?** Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels with 4 Axle Pegs, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, Black by mongoose
- **How much does it cost?** $1794.93 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/72307474-legion-l20-kids-freestyle-bmx-bike-intermediate-rider-boys-girls)

## 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

- • **Built to Shred:** Hi-Ten steel frame and 20.5" top tube engineered for park, street, and dirt domination.
- • **Grip & Durability:** 36H aluminum single-wall rims with 20" x 2.3" BMX tires built to conquer any terrain.
- • **Precision Control:** Aluminum U-brakes and brake levers deliver sharp, reliable stopping power every ride.
- • **Ready to Ride & Last:** Ships nearly assembled with a 5-year frame warranty—because your ride should keep up with your ambition.
- • **Smooth Power Transfer:** 175mm chromoly tubular cranks paired with a sealed bearing bottom bracket for effortless pedaling.

## Overview

The Mongoose Legion L40 is an intermediate freestyle BMX bike designed for riders 5’0"-5’6" seeking a versatile, durable ride. Featuring a Hi-Ten steel frame, 20-inch wheels with grippy 2.3" tires, and a high-performance Micro Drive 25x9T gearing system, it excels on park, street, and dirt terrains. Precision aluminum U-brakes and chromoly cranks ensure control and power, while a 5-year frame warranty guarantees lasting performance.

## 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 L20 was designed to be a fully park, street and dirt worthy BMX bike. The Legion L20 features a Hi-Ten steel frame (20.25” top tube), tapered headtube, and removable brake mounts. The L20 Hi-Ten steel 8” rise handlebar and 48mm stem are designed for precision riding, while the wide aluminum single wall 36H rims and 2.3” BMX tires offer grip and durability. The 25x9T gearing with one-piece tubular chromoly 170mm hollow spindle cranks and American loose ball bottom bracket offer a clean, reliable drivetrains. An alloy U-brake with alloy brake levers provide speed control, while the Hi-Ten Steel BMX fork with 1-1/8" threadless steerer and taper leg 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.

Review: This bike is amazing! - I cannot say enough good things about this bike. My son saved his money to pay for it himself and it’s worth every penny. He is 11, it fits him perfectly. It rides so smooth and so sturdy. The brakes are amazing. It was very easy to put together. The best part is the sleek look!
Review: YOU NEED TO BE A BIT TOOL SAVVY - Not a bad bike my son truly enjoys it. Quite sturdy and I can see the bike handle well and looks pretty durable. As far as assembly I’ve worked with tools before so it’s low level know how when it comes to assembling this bicycle. I did notice some people having issues with the rear pegs. These pegs require you to remove the bolts from the rear tire and add bolts after placing the pegs. I’m sure if you search videos on how to install it properly you will see how easy it can be. I suggest searching a video since the instruction manual can be a bit tricky.

## Features

- L20 is a stylish freestyle BMX bike that offers everything a beginning rider needs to hit the streets and pop off curbs, Suggested rider height is 4’8”-5’4”
- Built to last with its Hi-Ten steel frame, removable brake mounts, and a top tube length of 20.25 inches
- Boasts a high-performance drivetrain equipped with 170mm one-piece forged steel cranks, a 25T alloy chainring, and an American loose ball bottom bracket
- Wheelset is equipped with 20” x 2.3” tires mounted on aluminum single wall 36H rims with 3/8” female axle front hub and 9T cog sealed bearing cassette rear hub
- Single rear aluminum U-brake and brake levers provide precision speed control, while the Hi-Ten steel handlebar and fork are joined by a 50mm stem and threadless sealed integrated headset for maximum steering performance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07G1CS5QF |
| Additional Features | Aluminum Frame, BMX, freestyle |
| Age Range (Description) | Big Kid |
| Age Range Description | Big Kid |
| Best Sellers Rank | #458,671 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #356 in Kids' Bicycles |
| Bicycle Drivetrain Type | Single-speed |
| Bicycle Gear Shifter Type | Trigger |
| Bike Type | BMX Bike |
| Brake Style | U Brake |
| Brand | Mongoose |
| Brand Name | Mongoose |
| Color | Black |
| Customer Reviews | 4.3 out of 5 stars 1,064 Reviews |
| Derailleur Configuration | Rear |
| Frame Material Type | Alloy Steel |
| Gear Type | cassette |
| Global Trade Identification Number | 00038675158092 |
| Included Components | Bicycle |
| Intended Riding Terrain | BMX Terrain |
| Item Type Name | BMX Freestyle Bike |
| Item Weight | 34.4 pounds |
| Manufacturer | Pacific Cycle, Inc. |
| Minimum User Height | 5 feet |
| Model Name | Legion Intermediate |
| Model Number | M41509M10OS-PC |
| Model Year | 2023 |
| Number Of Speeds | 1 |
| Number of Handles | 1 |
| Number of Speeds | 1 |
| Seat Material | Mongoose Unifier |
| Size | 20-Inch Wheels/L20 |
| Specific Uses For Product | Trail |
| Style Name | L20 |
| Suspension Type | Rigid |
| UPC | 038675158092 |
| Warranty Description | Limited LIfetime |
| Warranty Type | Limited |
| Wheel Material | Aluminum |
| Wheel Size | 20 inches |

## Product Details

- **Age Range (Description):** Big Kid
- **Bike Type:** BMX Bike
- **Brand:** Mongoose
- **Color:** Black
- **Frame Material:** Alloy Steel
- **Included Components:** Bicycle
- **Number of Speeds:** 1
- **Special Feature:** Aluminum Frame, BMX, freestyle
- **Suspension Type:** Rigid
- **Wheel Size:** 20 inches

## Images

![Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels with 4 Axle Pegs, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, Black - Image 1](https://m.media-amazon.com/images/I/81sxU-jSs1L.jpg)

## Questions & Answers

**Q: Are the bike pegs removable? My son wants to use it as a dirt jumper.**
A: The bike we received didn't have the pegs assembled.  As a matter of fact the pegs aren't that good. Slippery for shoes.

**Q: how much does the bike weigh in total**
A: Hi there! This model is roughly 32 lbs. when fully assembled. Thanks for reaching out!

**Q: My son is 7yr old and is 4'3" will the L20 fit him?**
A: For the most part, yes, it'll fit him. For those wanting to be technical no not all BMX bikes are a universal fit for all ages, but that's, in part at least, why there's an adjustable seat post to them, quite simply. Also, a quality BMX bike should be able to grow with a kid and accommodate his size as he grows. It might seem as simple as adjusting the seat post, but most of the youths tend to start off riding in a sitting position and grow to ride standing up more often than not, so adjusting the seat post height really becomes a non-issue soon enough. But another simple method is, have the kid straddle the bike. If the top tube is bumping his crotch, the bike is too big for him and vice versa.

**Q: Is the legion L20 a good fit for a teenager?**
A: For an L20 model I would suggest a rider 4' 8" – 5' 4" in height. That can be a wide range of ages that's generally 8 and up. Thank you, Nicole

## Customer Reviews

### ⭐⭐⭐⭐⭐ This bike is amazing!
*by J***N on May 15, 2024*

I cannot say enough good things about this bike. My son saved his money to pay for it himself and it’s worth every penny. He is 11, it fits him perfectly. It rides so smooth and so sturdy. The brakes are amazing. It was very easy to put together. The best part is the sleek look!

### ⭐⭐⭐⭐⭐ YOU NEED TO BE A BIT TOOL SAVVY
*by A***Z on December 13, 2022*

Not a bad bike my son truly enjoys it. Quite sturdy and I can see the bike handle well and looks pretty durable. As far as assembly I’ve worked with tools before so it’s low level know how when it comes to assembling this bicycle. I did notice some people having issues with the rear pegs. These pegs require you to remove the bolts from the rear tire and add bolts after placing the pegs. I’m sure if you search videos on how to install it properly you will see how easy it can be. I suggest searching a video since the instruction manual can be a bit tricky.

### ⭐⭐⭐⭐⭐ you need tools to assemble! No tools included
*by M***Y on September 27, 2020*

this bike is affordable and of great quality. My 10 year old loves it! It comes pre-assembled but you need real tools to finish putting it together. it looks like it will last a long time, material seemed to be of good quality. we took it for a ride after 3 days since I needed tools to have it ready. it is worth every penny. definitely recommend it.

## 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
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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-10-10*