Mongoose Legion BMX Bike, Hi-Ten Steel Frame, 25x9T Gearing
- Kids' Bike
- More reviewed than 97%
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How it ranks among the 150 kids' bikes we track
4.4★ across 4,100 Amazon ratings, Bayesian-smoothed toward the category average.
4,100 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 150 kids' bikes we track - how the scorecard works · full kids' bikes data report. Confidence: limited - incomplete product information.Last refreshed Jun 21, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
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
- Trusted Mongoose quality with a 4.4-star rating from 4,100+ reviews
Specifications
| Brand | Brand |
|---|---|
| Model | M41707M70OS |
Other Brand kids' bikes
How it compares
This product against the closest alternatives we track in kids' bikes.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Mongoose Legion BMX Bike, Hi-Ten Steel Frame, 25x9T GearingThis product | 4.4 / 5 | 4,100 | 2.7 / 5 |
| Dynacraft Hot Wheels 16-Inch BMX Bike for BoysDynacraft | 4.5 / 5 | 3,200 | 4.4 / 5 |
| Coewske Kids Bike 18 Inch Steel Frame Princess Style with Training WheelsCoewske | 4.6 / 5 | 2,200 | 4.5 / 5 |
| JOYSTAR 12-16 Inch Vintage Kids Bike with Training Wheels & BasketJoystar | 4.6 / 5 | 2,800 | 4.3 / 5 |
| Schwinn Koen 12-Inch Kids BikeSchwinn | 4.4 / 5 | 6,500 | 4.2 / 5 |
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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.