---
product_id: 355145687
title: "Mongoose Legion BMX BMX Bike"
brand: "mongoose"
price: "$160.89"
currency: USD
in_stock: false
reviews_count: 5
url: https://www.desertcart.us/products/355145687-mongoose-legion-bmx-bmx-bike
store_origin: US
region: United States of America
---

# 4130 Chromoly full frame 20" x 2.4" wide double-wall rims 175mm tubular chromoly cranks Mongoose Legion BMX BMX Bike

**Brand:** mongoose
**Price:** $160.89
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Own the streets and parks with the Mongoose Legion L100 – where durability meets daredevil style! 🚀

## Quick Answers

- **What is this?** Mongoose Legion BMX BMX Bike by mongoose
- **How much does it cost?** $160.89 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/355145687-mongoose-legion-bmx-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

- • **Ready to Shred:** Comes with wide 20” x 2.4” tires on durable double-wall rims, ensuring grip and stability on every jump and landing.
- • **Precision Control:** Equipped with aluminum U-brakes and sealed integrated headset for smooth, responsive handling and reliable speed control.
- • **Pro-Grade Durability:** Built with a full 4130 chromoly frame for unmatched strength and longevity, ready to withstand the toughest tricks and terrains.
- • **Optimized Ride Geometry:** 21” top tube and 8.75” rise handlebars designed for perfect balance between street, park, and dirt riding versatility.
- • **High-Performance Drivetrain:** 175mm two-piece tubular chromoly cranks paired with a 25T aluminum chainring deliver clean, efficient power transfer for explosive tricks.

## Overview

The Mongoose Legion L100 BMX bike is a professional-grade freestyle machine featuring a full 4130 chromoly steel frame, 20-inch wide tires on double-wall rims, and a precision drivetrain with tubular chromoly cranks. Designed for riders around 5'8", it excels in park, street, and dirt riding with durable components, responsive brakes, and optimized geometry. Backed by a 5-year frame warranty, it’s built to elevate your BMX game from beginner jumps to advanced aerials.

## 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 L100 was designed to be a fully park, street and dirt worthy BMX bike. The Legion L100 features a professional-grade full 4130 chromoly frame (21” top tube), tapered headtube, mid BB shell, and removable brake mounts. The L100 4130 chromoly 8.75” rise handlebar and 50mm stem are designed for precision riding, while the wide aluminum double wall 36H rims and 2.4” BMX tires offer grip and durability when landing a trick. The 25x9T gearing with two-piece tubular chromoly 175mm hollow spindle cranks and mid sealed bottom bracket offer a clean, reliable drivetrains. An alloy U-brake with alloy brake levers provide speed control, while the 4130 chromoly 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: Gutes BMX, Bremskabelhalterung musste mit Locktite festgemacht werden. Ich habe es mit einem Mittelmotor aufgerüstet zum E-Bike und nen Gepäckträger dran gemacht zum EInkaufen, dazu ne 3 Gang und Schutzbleche. Sieht aus wie ne Mini Motorcross und Dampf Dampf Dampf
Review: Yo! Shredmaster Dave here, droppin' rhymes on the L100 Legion. This beast ain't your average barney-basher. Full cromo frame feels bomber, grinds smoother than Matty's crannies. Sealed bearings boost spins, cranks handle hops like they got springs. Flyweight bars whip like a dream, pegs grind true – no sketchy snags. Brakes got bite, landings feel plush, weight's dialed for airtime crush. Don't sleep on this whip, riders – L100's legit, street cred guaranteed!

## Features

- L100 is a fully park, street or dirt-worthy freestyle BMX bike, beginner-level curb jumps all the way up to advanced aerial tricks on a quarterpipe, Suggested rider height is 5'8" and Up
- Extreme durability, Mongoose full 4130 Chromoly frame, removable brake mounts, mid BB shell, featuring a 21” top tube length
- Drivetrain features 175 mm two-piece tubular chromoly hollow spindle cranks with a 25T aluminum chainring and mid sealed bearing bottom bracket
- Wheelset features 20” x 2.4” tires mounted on wide aluminum double 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 4130 chromoly handlebar and fork are joined by a 50 mm stem and threadless sealed integrated headset for maximum steering performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B088NLTFJ4 |
| Age Range | Big Kid |
| Bike Type | BMX Bike |
| Brake Type | U Brake |
| Brand | Mongoose |
| Color | Grey |
| Customer Reviews | 4.0 4.0 out of 5 stars (37) |
| Date First Available | 7 February 2021 |
| Department | unisex-adult |
| Features | Aluminum Frame, BMX, freestyle |
| Frame Material | Chromoly Steel |
| Included Components | Bike |
| Item model number | M41201U20OS |
| Manufacturer | Pacific Cycle, Inc. |
| Material Type | Steel |
| Number of Speeds | 1 |
| Power Source | Pedal power |
| Product Dimensions | 62 x 23 x 135 cm; 12 kg |
| Size | 20-Inch Wheels |
| Style | L100 |
| Suspension | Rigid |
| Usage | Trail |
| Wheel Size | 20 Inches |

## Product Details

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

## Images

![Mongoose Legion BMX BMX Bike - Image 1](https://m.media-amazon.com/images/I/81e+w8hFrzL.jpg)
![Mongoose Legion BMX BMX Bike - Image 2](https://m.media-amazon.com/images/I/71fPVOoKc3L.jpg)
![Mongoose Legion BMX BMX Bike - Image 3](https://m.media-amazon.com/images/I/61L+grliXoL.jpg)
![Mongoose Legion BMX BMX Bike - Image 4](https://m.media-amazon.com/images/I/719GCzU3QdL.jpg)
![Mongoose Legion BMX BMX Bike - Image 5](https://m.media-amazon.com/images/I/71RgxyNAn4L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***S on 14 October 2025*

Gutes BMX, Bremskabelhalterung musste mit Locktite festgemacht werden. Ich habe es mit einem Mittelmotor aufgerüstet zum E-Bike und nen Gepäckträger dran gemacht zum EInkaufen, dazu ne 3 Gang und Schutzbleche. Sieht aus wie ne Mini Motorcross und Dampf Dampf Dampf

### ⭐⭐⭐⭐⭐ Review
*by D***D on 16 February 2024*

Yo! Shredmaster Dave here, droppin' rhymes on the L100 Legion. This beast ain't your average barney-basher. Full cromo frame feels bomber, grinds smoother than Matty's crannies. Sealed bearings boost spins, cranks handle hops like they got springs. Flyweight bars whip like a dream, pegs grind true – no sketchy snags. Brakes got bite, landings feel plush, weight's dialed for airtime crush. Don't sleep on this whip, riders – L100's legit, street cred guaranteed!

### ⭐⭐⭐⭐⭐ Review
*by S***E on 4 December 2025*

Super easy to put together. The green is a nice color. Fits my 13 year old perfectly. He’s almost 6 feet tall and it’s great!!

## Frequently Bought Together

- Mongoose Legion Freestyle BMX Bike for Advanced-Level or Professional Riders, Adult Men Women, 4130 Chromoly Frame, and 20-Inch Wheels
- Zelerdo 2 Pairs Aluminum Alloy Bike Pegs for Mountain Bike Cycling Rear Stunt Pegs Fit 3/8 inch Axles

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-26*