Giant Fathom 1

Name: Giant Fathom 1
Brand: Giant

2022 MountainTrail Manufacturer page

Last known price: $1,850

Prices shown first for United States
Fork travel: 130 mm
Wheels: 27.5″
Drivetrain: 1 × 12 30t / 11–50t
Gear range: 455%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 163–173
MD 170–181
LG 178–189
XL 186–198

Components

16 of 20 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

ALUXX SL-Grade Aluminum Not identified

Suspension

2 parts

Fork
- Giant
Rear shock

None

Drivetrain

7 parts

Brakes

2 parts

Brake levers
- Shimano
BR-MT401
Brakes
- Shimano BR-MT420
BR-MT420RT-26

Wheels and tires

5 parts

Front hub

alloy, open-race sealed bearings Not identified
Rear hub

alloy, open-race sealed bearings Not identified
Rims
- Giant
Spokes

stainless Not identified
Tires
- Maxxis Ardent Race

Cockpit and contact points

6 parts

Grips
- Giant
Handlebar
- Giant
Pedals

None
Saddle
- Giant
Seatpost
- Giant
Stem
- Giant

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 445mm

Stack 622mm

Wheelbase 1174mm

Head angle 66.0°

Seat angle 75.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	425	445	470	490
Stackmm	622	622	631	640
Top tube lengthmm	592	612	639	662
Seat tube lengthmm	380	430	465	495
Head tube lengthmm	95	95	105	115
Head tube angle	66°	66°	66°	66°
Seat tube angle	75°	75°	75°	75°
Chainstay lengthmm	435	435	435	435
Wheelbasemm	1154	1174	1203	1227
Front centermm	726	746	774	798
Bottom bracket dropmm	60	60	60	60
Bottom bracket heightmm	295	295	295	295
Standover heightmm	712	726	746	771
Fork rakemm	44	44	44	44
Trailmm	113	113	113	113
Stack/reach ratio	1.46	1.40	1.34	1.31
Suspension and parts
Crank lengthmm	165	170	170	170
Handlebar widthmm	780	780	780	780
Stem lengthmm	40	40	50	50

Not published by the manufacturer: Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 130 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 50
Lowest gear: 16.5 in
Highest gear: 75.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Air
Tire clearance: Maximum tire width: 2.6″
Tire width: 2.6″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

4 measures

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

Front travel

130 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2022
Sample: 1,700 bicycles with this information
Coverage: 98.6% of the class

Lowest gear

16.5 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2022
Sample: 1,353 bicycles with this information
Coverage: 78.4% of the class

Highest gear

75.0 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2022
Sample: 1,353 bicycles with this information
Coverage: 78.4% of the class

Shifting

Mechanical

121 of 1,724 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2022
Sample: 1,724 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.3 km/h
Highest gear: 28.7 km/h

Total gear range 455%

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: 16.5–75.0 gear inches
Class reference (p10–p90): 16.9–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2022
Lowest gear: 1353 bicycles with this information, 78.4% of the class
Highest gear: 1353 bicycles with this information, 78.4% of the class

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 2022 builds
Specification	This bicycle Giant Fathom 1	Giant Fathom 2	Giant Fathom 29 1	Giant Fathom 29 2
Frame
Bicycle weight	Not informed	12.77 kg	Not informed	Not informed
Drivetrain
Rear sprockets	12	10	12	10
Largest sprocket	50	46	50	46
Lowest gear	16.5 in	17.9 in	17.4 in	18.9 in
Highest gear	75.0 in	75.0 in	79.1 in	79.1 in
Other specifications
Tire clearance	Maximum tire width: 2.6″	Maximum tire width: 2.6″	Maximum tire width: 2.5″	Maximum tire width: 2.5″
Tire width	2.6″	2.6″	2.5″	2.5″
Wheel size	27.5″	27.5″	29″	29″