FORTH 20 X2

Name: FORTH 20 X2
Brand: FORTH

2025 YouthMountain youth Manufacturer page

Last known price: $900

Prices shown first for United States
Fork travel: 80 mm
Wheels: 20″
Drivetrain: 1 × 9 30t / 11–38t
Gear range: 345%
Weight: 10.9 kg 24.0 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

One Size

The manufacturer did not publish rider heights for these sizes.

Components

8 of 18 identified

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

1 part

Frame

AHF-6061 Heat Treated, Hydroformed Aluminum Not identified

AHF-6061

Suspension

1 part

Fork

Atlas Air Fork Not identified

Drivetrain

6 parts

Brakes

2 parts

Brake levers
- Shimano BL-MT200
BL-MT200
Brakes
- Shimano BR-MT200
BR-MT200

Wheels and tires

4 parts

Front hub

Jackl – Alloy, Sealed Bearings, Quick Release Not identified
Rear hub

Jackl – Alloy, Sealed Bearings, Quick Release Not identified
Rims

20” x 1.75, Alloy Not identified
Tires

Bend Sender – 20" x 2.3 Not identified

Cockpit and contact points

4 parts

Grips

115 mm, lock-on Not identified
Pedals

Platform, Alloy, 108 x 95mm, 9/16" thread Not identified
Saddle

Velo-7087 Not identified
Seatpost

27.2 mm Not identified

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size One Size

Table

Geometry diagram unavailable

The drawing needs bottom bracket drop / Bottom bracket height, which the manufacturer did not publish. Available facts remain in the table.

Size Reach Stack

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Reachmm	319
Stackmm	424
Top tube lengthmm	449
Seat tube lengthmm	275
Head tube lengthmm	100
Head tube angle	69°
Seat tube angle	71°
Chainstay lengthmm	340
Wheelbasemm	857
Front centermm	519
Stack/reach ratio	1.33

Not published by the manufacturer: Bottom bracket drop, Bottom bracket height, Standover height, Fork rake, Trail, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

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

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 38
Lowest gear: 15.8 in
Highest gear: 54.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic 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

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

15.8 gear inches

This value is below the central range for this class.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 257 bicycles with this information
Coverage: 70.0% of the class

Highest gear

54.6 gear inches

This value is within the central range for this class.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 257 bicycles with this information
Coverage: 70.0% of the class

Shifting

Mechanical

10 of 367 bicycles with this information use electronic shifting.

Cohort: Youth / Mountain youth Model year: 2025
Sample: 367 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.0 km/h
Highest gear: 20.9 km/h

Total gear range 345%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 15.8–54.6 gear inches
Class reference (p10–p90): 14.0–80.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Youth / Mountain youth Model year: 2025
Lowest gear: 257 bicycles with this information, 70.0% of the class
Highest gear: 257 bicycles with this information, 70.0% of the class