---
product_id: 448667574
title: "Mongoose Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, White"
brand: "mongoose"
price: "€ 203.58"
currency: EUR
in_stock: false
url: https://www.desertcart.ie/products/448667574-mongoose-legion-l20-kids-freestyle-bmx-bike-intermediate-rider-boys
store_origin: IE
region: Ireland
---

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

**Brand:** mongoose
**Price:** € 203.58
**Availability:** ❌ Out of Stock

## Summary

> 🚀 Own the streets with the Mongoose Legion L20 – where style meets unstoppable performance!

## Quick Answers

- **What is this?** Mongoose Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, White by mongoose
- **How much does it cost?** € 203.58 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/448667574-mongoose-legion-l20-kids-freestyle-bmx-bike-intermediate-rider-boys)

## 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

- • **Grip & Stability:** 20” x 2.3” BMX tires on aluminum single wall rims provide superior traction on any terrain.
- • **Precision Control:** Aluminum U-brake and brake levers deliver responsive stopping power for confident riding.
- • **Smooth Power Transfer:** One-piece forged steel cranks with 25T alloy chainring ensure efficient pedaling.
- • **Street-Ready Durability:** Hi-Ten steel frame built to withstand freestyle tricks and daily rides.
- • **Tailored Fit for Growing Riders:** Ideal for kids 4’8” to 5’4” with a 20.25-inch top tube for comfortable handling.

## Overview

The Mongoose Legion L20 is a freestyle BMX bike designed for intermediate riders aged roughly 4’8” to 5’4”. Featuring a rugged Hi-Ten steel frame, 20-inch wheels with grippy 2.3” tires, and a reliable 25x9T BMX drivetrain, it’s built to handle street, park, and dirt riding. Precision aluminum U-brakes and a responsive handlebar setup ensure control, while the bike’s durable components come backed by a 5-year frame warranty, making it the perfect ride for young BMX enthusiasts ready to push their limits.

## 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.

## Features

- The Legion 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”.
- The durable L20 features a Hi-Ten steel frame, removable brake mounts, and a 20.25-inch top tube length.
- The L20’s drivetrain features 170mm one-piece forged steel cranks with a 25T alloy chainring and American loose ball bottom bracket.
- The wheelset features 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.
- 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 |
|---------------|-------|
| Age Range | Big Kid |
| Bike Type | BMX Bike |
| Brake Type | U Brake |
| Color | White |
| Size | 20-Inch Wheels L20 |
| Style | Legion L20 |
| Frame Material | Alloy Steel |
| Material Type | Steel |
| Number of Speeds | 1 |
| Power Source | human-powered |
| Skill Level | Intermediate |
| Features | Aluminum Frame, BMX, freestyle |
| Usage | Trail |
| Suspension | Rigid |
| Wheel Size | 20 Inches |
| Included Components | [Bike, BMX Pedals, Chain, Bicycle Seat, U-Brake, Brake Levers, Handlebar, Fork, Stem, 1-1/8 inch Headset, Three-piece Forged Steel Cranks, Chainring, Bottom Bracket, Front Hub, Rear Spokes, Double Wall Aluminum Rims, Tires] |
| Brand | Mongoose |
| Department | boys |
| Manufacturer | Pacific Cycle, Inc. |
| Item model number | M41801U10OS |
| Product Dimensions | 62 x 23 x 135 cm; 12 kg |
| ASIN | B088NQJZWR |

## Product Details

- **Bike type:** BMX Bike
- **Age range (description):** Big Kid
- **Brand:** Mongoose
- **Number of speeds:** 1
- **Colour:** White

## Images

![Mongoose Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, White - Image 1](https://m.media-amazon.com/images/I/81EJpbl4THL.jpg)
![Mongoose Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, White - Image 2](https://m.media-amazon.com/images/I/71hD2yQZuCL.jpg)
![Mongoose Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, White - Image 3](https://m.media-amazon.com/images/I/61ceXZwgorL.jpg)
![Mongoose Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, White - Image 4](https://m.media-amazon.com/images/I/71cK5+Qm14L.jpg)
![Mongoose Legion L20 Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing, White - Image 5](https://m.media-amazon.com/images/I/71uWdpJPZIL.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

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-18*