Mongoose Aztec Fat Tire Bike 26 Inch
- Size: 18 inches
- Wheel Size: 26 inches
- Minimum User Height: 63 inches
- Maximum Weight Recommendation: 60 pounds
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A solid entry point into fat tire riding for flat terrain and beach cruising, with reliable assembly but a stock seat and shifter that many riders upgrade soon after purchase.
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ASIN: B01GZSMDR8Category: Mountain Bikes
Overview
A steel frame fat tire bike with 26 inch wheels, 4 inch knobby tires, a 7-speed twist shifter and front and rear disc brakes, built for beach and mixed terrain cruising rather than speed. Mongoose sizes it for riders roughly 5-foot-3 to 6-foot-1.
- 26 inch wheels with 4 inch knobby tires
- Steel frame beach cruiser geometry
- 7-speed twist shifter
- Front and rear disc brakes
Who it's for
Riders who want a stable, low-speed cruiser for beach sand, dirt trails or casual mixed terrain, not for anyone chasing distance or hill performance. Good as a first fat tire bike to try the category before committing to a bike shop upgrade.
Pros and cons
- Stable and easy to ride on sand and mixed terrain
- Assembles in about an hour with basic tools
- Disc brakes provide reliable stopping
- Struggles on hills and inclines
- Stock seat is narrow and often replaced
- Twist shifter less precise than a rapid-fire upgrade
- Isolated reports of a bent rim and a snapped chain out of the box
Performance notes
The 7-speed twist shifter gets replaced by some riders with a rapid-fire shifter for smoother gear changes, and disc brakes need occasional adjustment according to owner feedback.
Specifications
| Brand | Mongoose |
|---|---|
| Dimensions & fit | |
| Size | 18 incheslower than 88% of 49 mountain bikes |
| Wheel Size | 26 inches |
| Minimum User Height | 63 incheslower than 51% of 46 mountain bikes |
| Maximum Weight Recommendation | 60 poundslower than 98% of 48 mountain bikes |
| Item Weight | 52 poundshigher than 89% of 39 mountain bikes |
| Capacity & performance | |
| Number Of Speeds | 7 |
| Bicycle Gear Shifter Type | Twist Grip |
| Age Range Description | Adult |
| Power & efficiency | |
| Power Source | Pedal |
| Construction & materials | |
| Frame Material Type | Alloy Steel |
| Wheel Material | Alloy Steel |
| Seat Material | Faux Leather |
| Color | Red |
| Included components | |
| Included Components | Bicycle |
| Warranty & support | |
| Warranty Type | Limited |
| Other details | |
| Suspension Type | Front |
| Bike Type | Mountain Bike |
| Intended Riding Terrain | Beach, Trail, Urban Terrain |
| Derailleur Configuration | Rear |
| Skill Level | Beginner To Intermediate |
| Is Assembly Required | Yes |
| Number of Handles | 1 |
| Is Autographed | No |
| Additional Features | Fat Tire |
| Item Type Name | Fat Tire Bike |
Closest rivals on specs
Frequently asked questions
What rider height fits the Mongoose Aztec?
Mongoose sizes the 26 inch wheel frame for riders roughly 5-foot-3 to 6-foot-1.