Gravity

Gravity FSX 1.0 Dual Suspension Mountain Bike

4.1 (96 reviews)

Built for the trails that chew up cheap bikes — the Gravity FSX 1.0 brings dual suspension, disc brakes, and Shimano shifting to entry-level riders who mean business.

$549.00*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

Drop the FSX 1.0 on a hardpacked forest trail with a few root sections and you'll understand immediately why dual suspension matters at this price point. The Suntour long-travel adjustable preload fork soaks up front-end chatter that would rattle your hands numb on a rigid setup, while the rear suspension keeps the back wheel tracking the ground through loose corners rather than skipping over obstacles. Tektro Novela disc brakes add weather-independent stopping confidence — grab a handful on a wet descent and the feedback is consistent rather than the spongy fade you get from rim brakes in the rain. Shimano EF51 shifters and the Acera rear derailleur give clean, predictable 24-speed shifting that holds adjustment well across a season of regular use.

The aluminum frame keeps weight reasonable for a dual-suspension design, and the double-wall alloy wheels add the lateral stiffness needed to handle side loads during cornering without folding. At 26 x 2.1 inches, the stock tires roll confidently on mixed terrain. Construction is trail-durable rather than race-light — this is a bike built to absorb punishment, not to win a gram war. Assembly is required and cable-actuated derailleurs take some initial setup patience, but once dialed, the FSX 1.0 rides consistently. For beginner to intermediate trail riders who want real suspension and real brakes without a four-figure price tag, it's a legitimate entry point into capable mountain biking.

Key Features

Strong and Durable

Easy to Use Shifters

Adjustable Suspension - Front and Rear!

Assembly Required

Quick Release Wheels - Front and Rear

Specifications

Brand
Gravity
Model
FSX 1.0
Speeds
24
Frame
Aluminum
Fork
Suntour Long Travel, Adjustable Preload
Crankset
Alloy Triple
Shifters
Shimano EF51 24-Speed
Front Derailleur
Shimano
Rear Derailleur
Shimano Acera
Wheels
26in Double Wall Alloy
Tires
26 × 2.1 Black
Brakes
Tektro Novela Disc
Handlebar
Aluminum Riser
Seatpost
Alloy 27.2
Suspension
Front and Rear (Dual)

Pros & Cons

👍 Pros

  • Front and rear dual suspension absorbs trail chatter and larger impacts that would transfer harshly through a rigid or hardtail frame.
  • Tektro Novela disc brakes provide reliable stopping power in wet and muddy trail conditions where rim brakes lose effectiveness.
  • Shimano EF51 24-speed drivetrain gives a wide enough gear range to handle climbs and flat stretches without spinning out.
  • Double-wall alloy wheels add lateral stiffness and durability compared to single-wall rims at this price range.
  • Suntour adjustable preload fork lets riders tune front suspension firmness to match their weight and terrain preference.

👎 Cons

  • Assembly is required and derailleur setup can be tricky for first-time builders — cable tension and limit screw adjustment takes patience to get right out of the box.
  • Mechanical disc brakes require periodic cable tension adjustment, especially after aggressive trail use that stretches cables.
  • At an entry-level price point, stock components like the crankset and seatpost are functional but lighter-duty than mid-tier trail bike equivalents.
  • 26-inch wheel format is an older standard — tire and replacement rim availability is narrowing compared to modern 27.5" or 29" wheel sizes.
  • Rear suspension on budget dual-suspension bikes can feel vague or underdamped on fast, chunky terrain versus a quality hardtail with a decent fork.

Frequently Asked Questions

It's genuinely trail-capable for intermediate terrain. The Suntour adjustable-preload fork and rear suspension handle roots, rocks, and loose dirt better than a hardtail at this price point. For aggressive technical singletrack or jump lines, a more purpose-built trail bike would serve you better — but for forest paths, gravel doubletrack, and moderate descents, the FSX 1.0 holds its own.
Mechanical disc brakes like the Tektro Novela provide consistent stopping power in wet and muddy conditions where rim brakes lose grip. They're not as modular or powerful as hydraulic discs, but for the FSX 1.0's use case they're a meaningful upgrade over traditional V-brakes at this price tier.
Assembly is required — typically front wheel installation, handlebar setup, brake and derailleur cable adjustment, and saddle height. Basic tools and mechanical comfort are recommended. Professional bike shop assembly is an option if you're not comfortable with the initial setup.
Shimano EF51 shifters paired with Acera rear derailleur are reliable and relatively easy to tune, but any derailleur system will drift slightly after repeated hard use on rough terrain. A basic cable tension adjustment every few months keeps shifting crisp.
26-inch wheels on a mountain bike generally fit riders from roughly 5'0" to 6'0", though standover height and seat post extension will determine the best fit. Check the specific frame size against your inseam measurement before purchasing.