Mongoose Legion BMX Bike, Hi-Ten Steel Frame, 25x9T Gearing
- Kids' Bike
- More reviewed than 97%
Amazon Associate · we may earn from qualifying purchases. Prices & availability last checked Jul 8, 2026.
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
- Trusted Mongoose quality with a 4.4-star rating from 4,100+ reviews
| Brand | Brand |
| Model | M41707M70OS |
How it ranks among the 150 kids' bikes we track
4.4★ across 4,100 Amazon reviews, weighted by review volume.
Cheaper than 11% of the kids' bikes we track.
More reviewed than 97% of the category.
Scores are computed from the 150 kids' bikes we track: Amazon rating weighted by review volume, with price and demand ranked against the category. Data-driven, not a hands-on test. Scored by Jake Torres, sports & outdoors editor.
Questions about the Brand M41707M70OS
Common buyer questions answered straight from the product spec data — no fluff, no "it depends".
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.
