Mongoose Legion BMX Bike
- Wheel Size: 20 inches
- Brake Style: U Brake
- Number of Speeds: 1
- Color: Orange
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
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ASIN: B01LVXNPK7Category: Kids' Bikes
Overview
The Mongoose Legion BMX bike (model M41707M70OS) features a durable Hi-Ten steel frame and 25x9T gearing, designed for kids and beginners. It offers reliable performance for learning tricks and racing on BMX tracks.
- Durable Hi-Ten steel frame withstands the rigors of BMX riding
- 25x9T gearing provides quick acceleration for tricks and racing
- Available with 36x16T or 40x16T gearing options for versatility
Where it stands among kids' bikes
- #4 most-searched brand and model of the 22 kids' bikes lines we track (by search demand, not sales).
From the specs of the 156 kids' bikes we list; not a test result.
Specifications
| Brand | Mongoose |
|---|---|
| Dimensions & fit | |
| Wheel Size | 20 incheshigher than 63% of 144 kids' bikes |
| Maximum Weight Recommendation | 250 pounds |
| Item Weight | 32 pounds |
| Minimum user height | 56 inches |
| Capacity & performance | |
| Number of Speeds | 1 |
| Bicycle Drivetrain Type | Single Speed |
| Age Range Description | Little Kid |
| Power & efficiency | |
| Power Source | Pedal |
| Construction & materials | |
| Color | Orange |
| Frame Material Type | Alloy Steel |
| Wheel material | Alloy Steel |
| Included components | |
| Unit Count | 1 |
| Included components | Bicycle |
| Warranty & support | |
| Warranty Type | Limited |
| Warranty description | Limited lifetime |
| Other details | |
| Brake Style | U Brake |
| Bike type | BMX Bike |
| Suspension type | Rear |
| Number Of Handles | 2 |
| Style name | Mag |
| Intended riding terrain | BMX Terrain, Urban Terrain |
| Skill Level | Beginner |
| Specific Uses For Product | BMX |
| Item Type Name | Freestyle Sidewalk BMX Bike |
| Additional Features | Aluminum Frame, BMX, Freestyle, Off Road |
| Derailleur Configuration | Rear |
Closest rivals on specs
Frequently asked questions
Does the Mongoose Legion BMX bike (model M41707M70OS) come fully assembled?
The bike arrives partially assembled; you'll need to attach the handlebars, pedals, and seat using basic tools.
What is the frame material of the Mongoose Legion BMX bike?
The frame is made from Hi-Ten steel, offering strength and durability for BMX riding.
Is the Mongoose Legion BMX bike suitable for beginners?
Yes, it's designed for kids and beginner riders, with a sturdy frame and reliable gearing for learning.
What gearing options are available on the Mongoose Legion BMX bike?
This model offers 25x9T gearing, with alternative options of 36x16T or 40x16T depending on the variant.