---
product_id: 151300973
title: "Mongoose Legion Kids Freestyle BMX Bike"
brand: "mongoose"
price: "$1470.13"
currency: USD
in_stock: true
category: "Mongoose"
url: https://www.desertcart.us/products/151300973-mongoose-legion-kids-freestyle-bmx-bike
store_origin: US
region: United States of America
---

# 20-inch freestyle BMX wheels 2.4-inch wide double-wall aluminum rims 3-piece chromoly crankset Mongoose Legion Kids Freestyle BMX Bike

**Brand:** mongoose
**Price:** $1470.13
**Availability:** ✅ In Stock

## Summary

> 🔥 Own the streets and parks with the Mongoose Legion L40 – where every trick counts! 🚲

## Quick Answers

- **What is this?** Mongoose Legion Kids Freestyle BMX Bike by mongoose
- **How much does it cost?** $1470.13 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/151300973-mongoose-legion-kids-freestyle-bmx-bike)

## 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 Endure:** Sealed rear hub, headset, 14mm axle, aluminum pedals, and nickel-plated chain withstand the toughest BMX sessions.
- • **Grip That Sticks:** Wide 2.4-inch tires on durable double-wall rims for ultimate control on street, dirt, and skateparks.
- • **Next-Level Performance:** Engineered for riders 5'3" to 6'0" pushing bigger tricks and longer sessions.
- • **Power Transfer Mastery:** Chromoly crank and sealed bearing bottom bracket deliver smooth, efficient pedaling every ride.
- • **Legacy of Limits Pushed:** From BMX pioneers Mongoose, 50+ years of action sports expertise fueling your ride.

## Overview

The Mongoose Legion L40 is a 20-inch freestyle BMX bike designed for youth riders between 5'3" and 6'0" tall. It features wide 2.4-inch tires on double-wall aluminum rims for superior grip, a durable 3-piece chromoly crank with sealed bearings for smooth power transfer, and robust components like a sealed rear hub and aluminum pedals built to withstand demanding BMX riding. Backed by Mongoose’s 50+ years of BMX heritage, this bike is optimized for street, dirt, and skatepark use, making it ideal for riders pushing their limits and mastering new tricks.

## Description

The Mongoose Legion L40 is a freestyle BMX bike built for riders pushing bigger tricks, longer sessions, and more demanding riding. Designed for park, street, and dirt riding, this 20-inch BMX bike combines durable construction with performance-focused upgrades throughout. Wide 2.4-inch tires mounted to durable double-wall aluminum rims provide grip, control, and durability across skatepark surfaces, pavement, and packed dirt. A 3-piece chromoly crank, sealed bearing bottom bracket, and sealed rear hub deliver smooth, efficient power transfer, while a sealed headset helps keep handling precise ride after ride. Built to handle hard landings and demanding sessions, the L40 also features a durable 14 mm axle, aluminum pedals, and a nickel-plated chain for lasting performance. Whether you're dialing in new tricks, linking lines at the skatepark, or spending all day riding with friends, the Legion L40 is built to keep riders progressing. As one of the OGs in BMX and action sports, Mongoose has spent more than 50 years helping riders push limits, learn new tricks, and discover what BMX is all about. The Legion Series delivers freestyle BMX bikes for every stage of progression, from first-time riders to dedicated park and street riders. We've always been about epic rides and pushing limits—and we're just getting started.

## Features

- BUILT FOR THE NEXT LEVEL: Designed for riders 5' 3" to 6' 0" tall who are pushing bigger tricks and longer sessions, this freestyle BMX bike combines proven BMX geometry with performance-focused upgrades.
- BUILT TO STICK: Wide 2.4-inch tires mounted to durable double-wall aluminum rims provide grip to stay planted on street sessions, pavement, packed dirt, and skatepark surfaces.
- PUT THE POWER DOWN: A 3-piece chromoly crank and sealed bearing bottom bracket deliver smooth, efficient power transfer and the durability needed to keep riding day after day.
- READY FOR HARDER RIDING: A 9T sealed rear hub and sealed headset provide smooth, reliable performance, while a 14 mm axle, aluminum pedals, and nickel-plated chain are built for demanding BMX sessions.
- KNOW YOUR ROOTS: As one of the OGs in action sports, Mongoose has helped bring the BMX movement to the world. For over 50 years, we've been all about epic rides and pushing limits – and we're just getting started.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0H7TBM7WB |
| Additional Features | Adjustable Seat |
| Age Range (Description) | Youth |
| Age Range Description | Youth |
| Best Sellers Rank | #84,736 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #183 in Kids' Bicycles |
| Bicycle Drivetrain Type | Chain Drive |
| Bike Type | BMX Bike, Kids Bike |
| Brake Style | U Brake |
| Brand | Mongoose |
| Brand Name | Mongoose |
| Color | Navy |
| Customer Reviews | 4.4 out of 5 stars 2,148 Reviews |
| Frame Material Type | High Tensile Steel |
| Included Components | Reflectors, User Manual |
| Intended Riding Terrain | BMX Terrain, Paved Roads, Urban Terrain |
| Item Type Name | BMX Bicycle |
| Item Weight | 26.1 pounds |
| Manufacturer | Mongoose |
| Maximum Weight Recommendation | 200 pounds |
| Minimum User Height | 48 inches |
| Model Name | Legion L40 |
| Model Number | M4156G27U2OS11 |
| Model Year | 2026 |
| Number Of Speeds | 1 |
| Number of Speeds | 1 |
| Power Source | Manual |
| Seat Material | Polyvinyl Chloride (PVC) |
| Size | 20-Inch Wheels/L40 |
| Specific Uses For Product | Freestyle |
| Suspension Type | Rigid |
| UPC | 038675293762 |
| Unit Count | 1 Count |
| Warranty Description | Limited lifetime warranty on frame. 1 year limited warranty on parts. 30 day limited warranty on wearable parts. |
| Warranty Type | Limited |
| Wheel Material | Aluminum |
| Wheel Size | 20 inches |
| Wheel Width | 2.35 inches |

## Product Details

- **Age Range (Description):** Youth
- **Bike Type:** BMX Bike, Kids Bike
- **Brand:** Mongoose
- **Color:** Navy
- **Frame Material:** High Tensile Steel
- **Included Components:** Reflectors, User Manual
- **Number of Speeds:** 1
- **Special Feature:** Adjustable Seat
- **Suspension Type:** Rigid
- **Wheel Size:** 20 inches

## Images

![Mongoose Legion Kids Freestyle BMX Bike - Image 1](https://m.media-amazon.com/images/I/81Q3iF8wBAL.jpg)
![Mongoose Legion Kids Freestyle BMX Bike - Image 2](https://m.media-amazon.com/images/I/71gbXkgC2DL.jpg)
![Mongoose Legion Kids Freestyle BMX Bike - Image 3](https://m.media-amazon.com/images/I/71n2uEft4mL.jpg)
![Mongoose Legion Kids Freestyle BMX Bike - Image 4](https://m.media-amazon.com/images/I/91hlTjdTssL.jpg)
![Mongoose Legion Kids Freestyle BMX Bike - Image 5](https://m.media-amazon.com/images/I/813CXkpBpxL.jpg)

## Available Options

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

## 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 United States of America*
*Store origin: US*
*Last updated: 2026-09-19*