Gravity FSX 1.0 Review: Current Specs and Buying Advice
The Gravity FSX 1.0 remains listed by BikesDirect, but it has clear limits. Review its current specs, fit, assembly needs, best use, and key trade-offs.
The Gravity FSX 1.0 is a current low-cost full-suspension bike with a broad size range, 26-inch wheels, a 24-speed Shimano drivetrain, and mechanical disc brakes. It can suit recreational riding and mellow trails after correct assembly, but its basic suspension and older wheel format are not a substitute for a modern full-suspension trail bike.
BikesDirect still maintains a current FSX 1.0 listing and specification sheet. The retailer says actual stock must be confirmed during checkout. The exact Amazon variation checked for this update did not pass our availability gate, so this page does not include an Amazon affiliate card.
Gravity FSX 1.0 at a glance
| Question | Answer |
|---|---|
| Is it still listed new? | Yes, BikesDirect lists selectable sizes, but says checkout determines actual stock. |
| Who is it for? | A budget-focused rider using pavement, paths, gravel, and mellow trails. |
| What stands out? | Four frame sizes, mechanical disc brakes, and a wide-range 24-speed drivetrain. |
| What is the main trade-off? | Entry-level front and rear suspension add weight and maintenance without modern trail-bike capability. |
| Does it arrive ready to ride? | No. The retailer says bikes arrive up to 90 percent assembled and recommends a shop safety check. |
Current verified specifications
The current retailer specification sheet lists the following configuration:
| Component | Listed specification |
|---|---|
| Frame | 6061 aluminum front triangle with single-pivot rear suspension |
| Fork | SR Suntour suspension fork with preload adjustment |
| Rear suspension | KS coil-over unit with adjustable preload |
| Drivetrain | Shimano 24-speed, including an Acera rear derailleur and 11-34T eight-speed freewheel |
| Brakes | Tektro Novela mechanical disc brakes with 160 mm rotors |
| Wheels | 26-inch double-wall aluminum rims with 26 x 2.1-inch tires |
| Sizes | 15, 17, 19, and 21 inches |
| Assembly | Up to 90 percent assembled; final setup and safety checks remain required |
Component substitutions can occur on direct-sale bikes. Confirm the current checkout description and the parts on the delivered bicycle before relying on any specification.
What the FSX 1.0 does well
It offers more than one frame size
Four listed sizes are a real advantage over one-size budget bikes. The retailer’s height chart is only an approximation, so compare standover clearance, reach, and saddle-height range with a bicycle you already know fits.
Our mountain-bike sizing guide provides a safer process than choosing solely by height. If you fall between sizes, test the bike or get help from a shop before ordering.
The drivetrain has useful range
The listed triple-chainring crank and 11-34T eight-speed rear cluster provide low gears for ordinary climbs and higher gears for paved approaches. More gears do not make the bike faster by themselves. The benefit is having smaller steps and a usable range when the drivetrain is adjusted correctly.
Both wheels use disc brakes
Mechanical disc brakes keep braking surfaces away from the wheel rims and are serviceable with ordinary cables. Performance still depends on correct rotor alignment, clean pads, sound cables, and proper bedding.
Do not assume a disc brake is safe because the lever moves. Each brake must stop its wheel firmly without the lever touching the grip.
Where the low price shows
The suspension is basic
The FSX uses a single-pivot frame, coil-over rear unit, and preload-adjustable fork. Preload changes how much force is needed to start compressing a spring. It is not the same as adjustable damping, and it cannot tune the bike like a modern air-sprung trail suspension.
Rear suspension also adds pivots, bearings, and a shock that need inspection. Riders who do not need rear travel may get better wheels, tires, brakes, or fork quality from a similarly priced hardtail.
The 26-inch platform is dated
Replacement 26-inch tires and tubes remain common, but most current adult mountain-bike development centers on 27.5-inch and 29-inch wheels. That can limit future fork, wheel, and tire choices compared with newer platforms.
This does not make the FSX unusable. It does mean you should buy it for its current function, not as a long-term upgrade platform.
Final assembly is part of the purchase
BikesDirect states that its bikes arrive up to 90 percent assembled and recommends final assembly and safety checks at a local bike shop for riders who are not confident doing the work.
Before riding, verify wheel retention, brake operation, handlebar and stem security, crank and pedal installation, headset adjustment, tire seating, and shifting. Follow the exact component instructions and our new mountain-bike setup checklist. Do not guess torque values.
Who should consider it?
The FSX 1.0 is most defensible for a rider who:
- fits one of the available frame sizes;
- understands that it is a recreational budget bike;
- can arrange correct assembly and a safety inspection;
- rides pavement, bike paths, gravel roads, and mellow trails;
- values a low initial cost more than low weight or an upgrade-friendly platform.
Skip it if you want to ride jumps, drops, bike-park features, or fast technical terrain. Also skip it if you expect current trail geometry, through-axles, hydraulic brakes, an air fork, or a suspension design intended for aggressive use.
What to check before ordering
- Confirm the chosen size and color can actually proceed through checkout.
- Save the current specification and warranty information because components can change.
- Ask who will complete final assembly and what that service costs.
- Budget for pedals, fit adjustments, accessories, and early cable readjustment.
- Inspect the carton and bike for shipping damage before riding.
- Compare the complete cost with a current hardtail. Our mountain-bikes-under-$1,000 guide is still in the refresh queue, so independently verify its products and specifications before buying.
If the delivered wheel or tire appears uneven, stop and use our wheel-wobble diagnostic to identify whether the problem is tire seating, rim trueness, hub play, or axle security.
How we reviewed it
This is a research-based review. We did not conduct a new hands-on ride test or side-by-side suspension comparison.
On July 26, 2026, we checked the current BikesDirect product page and specification table, then retrieved the exact Amazon product data through Bright Data. The retailer page listed the FSX 1.0, while the Amazon child variation did not report as available. We therefore removed the old affiliate buttons and used the current retailer documentation for specifications.
Verdict
The Gravity FSX 1.0 is a reasonable recreational bike when the size fits, actual stock is confirmed, and final assembly is completed correctly. Its four frame sizes, disc brakes, and broad gearing are useful. Its basic suspension, 26-inch wheels, and assembly requirement are the reasons to compare it carefully with a newer hardtail before buying.
