Lowest gear
17.7 gear inches
This value is within the central range for this class.
FORTH 20 X1
1 of 4
FORTH 20 X1
1 of 4
- 80
- 20″
- 1 × 8
- 309%
- 10.9
- Aluminum
- Mechanical disc
Sizes
Size guide- One Size
Components
Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.
Frame and fork
-
Frame
AHF-6061
AHF-6061 Heat Treated, Hydroformed Aluminum
Suspension
-
Fork
Atlas Air Fork
Drivetrain
-
Bottom bracket
-
Cassette
-
Chain
-
Crankset
-
Rear derailleur
RD-M310
-
Shifters
SL-M315-8R
Brakes
-
Brake levers
-
Brakes
MD-M280
Wheels and tires
-
Front hub
Jackl – Alloy, Sealed Bearings, Quick Release
-
Rear hub
Jackl – Alloy, Sealed Bearings, Quick Release
-
Rims
20” x 1.75, Alloy
-
Tires
Bend Sender – 20" x 2.3
Cockpit and contact points
-
Grips
115 mm, lock-on
-
Pedals
Platform, Alloy, 108 x 95mm, 9/16" thread
-
Saddle
Velo-7087
-
Seatpost
27.2 mm
Sizes and geometry
Size explorer
Understanding sizes and measurements
Size One Size
Table
Reach
319mm
Stack
424mm
Wheelbase
857mm
Head angle
69.0°
Seat angle
73.0°
Specifications
Frame and fork
- Intended fit
-
- Unisex
- Frame material
-
- Aluminum
- Bicycle weight
-
- 10.9 kg
- 24.0 lb
Suspension
- Suspension configuration
-
- Hardtail
- Front travel
-
- 80 mm
Drivetrain
- Front chainrings
-
- 1
- Smallest chainring
-
- 30
- Largest chainring
-
- 30
- Rear sprockets
-
- 8
- Smallest sprocket
-
- 11
- Largest sprocket
-
- 34
- Lowest gear
-
- 17.7 in
- Highest gear
-
- 54.6 in
Wheels and brakes
- Wheel configuration
-
- Same size
- Brake type
-
- Mechanical disc
Fit and controls
- Seatpost
-
- Rigid seatpost
- Shifting
-
- Mechanical
Additional specifications
- Fork spring
-
- Air
- Tire width
-
- 2.3″
- Wheel material
-
- Aluminum
- Wheel size
-
- 20″
Technical analysis
How these figures sit among bicycles of the same class and model year. Context, not a ranking.
Highest gear
54.6 gear inches
This value is within the central range for this class.
Shifting
Mechanical
14 of 379 bicycles with this information use electronic shifting.
Gearing
This bicycle
- 6.8
- 20.9
Lineup changes
The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.
Differences across 2024 builds
Other models in this family
Published versions from the same family and model year.
20 X1
Similar bicycles
Same category, closest configuration.
