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2023 Giant

Fathom 1

A 27.5″ aluminum frame hardtail trail bike with upper mid-range components.
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Manufacturer Price

CA$2,299($1,665)
FrameAluminum
SuspensionHardtail, 130mm
ForkGiant Crest 34
Wheels27.5″ Aluminum
Drivetrain1 × 12
GroupsetNX Eagle, SX Eagle
BrakesShimano Hydraulic Disc
SeatpostDropper
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Fathom 1
Other Trail bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

22 mph

Fathom 1

26 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Fathom model range

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Sizing
SM

5'4" – 5'9"

MD

5'6" – 6'0"

LG

5'10" – 6'3"

Rider Fit Notes

None yet.

Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Reviews
off.road.cc
Giant Fathom 2 2020 review

Oct 2020

The 2020 Giant Fathom 2 is a beefy, 120mm-forked hardtail with big tyres, wide 650b rims and broad bars. It’s a reliable partner for big rides on natural terrain, but the short, tall geometry and mediocre Suntour fork hold it back on technical, twisty trails.

Read Review

Geometry
Specs
Build
Frame

ALUXX SL-Grade Aluminum, 12x148mm thru-axle

BB StandardBSA, 73mm, Threaded

Tire Clearance2.6"

ColorCold Night

Fork

Giant Crest 34 SL RCL, 130mm, 44mm offset, Boost 15x110

Travel130mm

Spring TypeAir

Shock

N/A

Bottom Bracket

SRAM SX PowerSpline, threaded

Stem

Giant Contact SL 35 S:40mm, M:40mm, L:50mm, XL:50mm

Handlebar

Giant Contact SL TR35, 780x35mm

Saddle

Giant Romero

Seatpost

Giant Contact Switch dropper, remote S: 125mm travel / 30.9 x 395mm

TypeDropper

Pedals

platform [GC,GT]

Grips

Giant Sole-O

Groupset
Rear Derailleur

SRAM NX Eagle

Front Derailleur

N/A

Crank

SRAM SX Eagle, 30t S:165mm, M:170mm, L:170mm, XL:170mm

Shifters

SRAM SX Eagle, 1x12

Cassette

SRAM SX Eagle, 11x50

Chain

SRAM SX Eagle

Brakes

Shimano BR-MT420/410, hydraulic, Shimano RT-26 rotors [F]180mm, [R]180mm

TypeShimano Hydraulic Disc

Brake Levers

Shimano BR-MT401

Wheels
Rims

Giant AM 27.5, tubeless ready sleeve-joint rim, 30mm inner width

Spokes

stainless

Front Hub

alloy, sealed

Rear Hub

alloy, sealed

Tires

Maxxis Ardent Race 27.5x2.6, folding, TR

Rider Notes
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First added January 21

Last updated January 25

Not listed for 125 days