Gravity Area 51 Adult BMX Bike
- Wheel Size: 19 inches
- Size: 19 inches
- Minimum User Height: 68.9 inches
- Maximum Weight Recommendation: 200 pounds
Last refreshed Jun 21, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A light aluminum-frame single-speed BMX cruiser with a chromoly fork, built for straightforward riding rather than technical gearing.
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ASIN: B0B5HTR8T3Model: Area 51Category: BMX Bikes
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Overview
A single-speed BMX cruiser from Gravity with an aluminum frame, three-piece cranks, a straight-blade chromoly fork, and 26-inch aluminum rims. It ships partially assembled in two frame sizes.
The aluminum frame and three-piece crank setup are what separate this from a department-store single speed, aimed at riders who want a lighter, sturdier BMX cruiser without a full drivetrain to maintain. Final assembly and tuning are needed before the first ride.
- Aluminum frame construction
- Straight-blade chromoly fork
- 26-inch aluminum rims
- Available in two sizes
Who it's for
Riders wanting a simple, light single-speed BMX cruiser for street or park riding rather than a multi-gear bike. Buyers uncomfortable doing final bike assembly and tuning themselves should budget for a shop to finish setup.
Pros and cons
- Light aluminum frame
- Chromoly fork adds front-end strength
- Easy assembly per owner feedback
- Wide handlebars and chunky tires
- Single speed only, no gearing
- Ships partially assembled
- Only one review on record
Performance notes
The aluminum frame keeps overall weight down compared to steel BMX bikes, which the one review on record noticed directly against a heavier steel bike. The straight-blade chromoly fork adds strength up front where BMX frames see the most stress, and the rear V-brake is the sole stopping method on this single-speed setup.
Specifications
| Brand | Gravity |
|---|---|
| Model | Area 51 |
| Dimensions & fit | |
| Wheel Size | 19 inches |
| Size | 19 inches |
| Minimum User Height | 68.9 inches |
| Maximum Weight Recommendation | 200 pounds |
| Capacity & performance | |
| Number Of Speeds | 1 |
| Age Range Description | Adult |
| Power & efficiency | |
| Power Source | Pedal |
| Construction & materials | |
| Frame Material Type | Aluminum |
| Wheel Material | Aluminum |
| Color | Electron Blue |
| Included components | |
| Unit Count | 1 |
| Included Components | Tool Kit |
| Other details | |
| Bike Type | BMX Bike, Cruiser Bike |
| Intended Riding Terrain | BMX Terrain |
| Brake Style | Linear Pull |
| Gear Type | Fixed Gear |
| Skill Level | Intermediate |
| Suspension Type | Rear |
| Is Assembly Required | Yes |
| Additional Features | 21 Speed, Aluminum Frame, BMX |
Closest rivals on specs
Frequently asked questions
How much assembly does the Gravity Area 51 need?
It arrives partially assembled, with final assembly and tuning needed before riding.
Is the frame steel or aluminum?
It uses a light aluminum frame with a straight-blade chromoly fork.
How many gears does it have?
It is a single-speed bike with no gear shifting.