Mongoose Flatrock Mountain Bike
- 26 inch wheels, aluminum rims
- Aluminum hardtail frame
- Front suspension fork
- 7 speeds per specs (21 in description)
- Twist grip shifter, V brakes
- 19.16 kilograms
- 64 inch minimum rider height
- 5 year frame warranty
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
An entry-level aluminum hardtail mountain bike with a front suspension fork, V brakes and twist shifters. Gear count differs between the specs and description, and the youth age range reads oddly beside the minimum height.
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ASIN: B0DL6STFJYCategory: Mountain Bikes
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Overview
A lightweight aluminum frame and Element suspension fork define this Mongoose hardtail, with alloy V brakes and a rear derailleur on twist shifters. Double wall alloy rims hold the wheels, and the saddle is polyurethane.
A hardtail frame with front travel handles gravel and light trail riding at a modest level, and V brakes are simple to adjust. Gear count appears as seven in the specs and as twenty-one in the description, which needs a call to the seller.
Who it's for
Beginner and intermediate riders on gravel paths and light trails. Aggressive riders, or buyers who want hydraulic brakes, should step up.
Pros and cons
- Aluminum hardtail frame
- Front suspension fork
- Alloy V brakes
- Double wall alloy rims
- Gear count stated two ways
- Age range conflicts with height minimum
- V brakes, not disc
Performance notes
A front fork absorbs bumps at the handlebar while the rigid rear passes impacts to the rider, so a hardtail climbs efficiently but feels harsher on rough descents. V brakes pull on the rim, so wet rims and worn pads lengthen stopping distances.
Where it stands among mountain bikes
- #9 most-searched brand and model of the 15 mountain bikes lines we track (by search demand, not sales).
From the specs of the 99 mountain bikes we list; not a test result.
Specifications
| Brand | Mongoose |
|---|---|
| Dimensions & fit | |
| Size | 17-inch frame / 26-inch wheelslower than 89% of 47 mountain bikes |
| Wheel Size | 26 inches |
| Minimum User Height | 64 incheshigher than 62% of 38 mountain bikes |
| Item weight | 19.16 kilograms |
| Capacity & performance | |
| Number Of Speeds | 7 |
| Bicycle Gear Shifter Type | Twist grip |
| Age Range Description | Youth |
| Construction & materials | |
| Frame Material Type | Aluminum |
| Wheel Material | Aluminum |
| Seat Material | Polyurethane (PU) |
| Color | Grey |
| Warranty & support | |
| Warranty Description | 5 years frame, 1 year parts, 30 days wearable parts |
| Other details | |
| Suspension Type | Front |
| Brake Style | V brake |
| Derailleur Configuration | Rear |
| Is Assembly Required | Yes |
| Model Year | 2025 |
Closest rivals on specs
Frequently asked questions
What frame size is the Mongoose Flatrock and who does it fit?
The size is a 17 inch frame with 26 inch wheels. The specs give a minimum user height of 64 inches, though the age range reads youth.
Does the Mongoose Flatrock have disc brakes?
No. The brakes are alloy V brakes, per the specs and description.
Does the Mongoose Flatrock need assembly?
Yes. The specs list assembly as required.