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Fathom 1

2020

$1,500

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Pick-up at any Giant retailer in about 7 business days.

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On All Bicycles

Free Returns

Within 14 Days

Assembly Included

By a professional mechanic

Get your dose of singletrack with more confidence and control. The combination of a lightweight hardtail frame, 120mm suspension fork, and 27.5 wheels with wide rims and cushy high-volume tires delivers loads of traction, speed and fun on the trail.

With its lightweight ALUXX SL aluminum frame, 27.5 wheels and high-volume tires, the new Fathom is a great choice for technical terrain and singletrack shredding. It blends the efficient ride quality of a classic hardtail with the confident ride quality of larger tires that absorb bumps and give you more traction—so you can tackle rougher trails with total control. The new frame is designed with trail-friendly geometry that includes a more relaxed head angle made for a 120mm suspension fork.

Key Performance Factors

Proven alloy performance

ALUXX SL aluminum frameset is hand-built in-house by the world leader in aluminum engineering.

Traction and stability

Frame geometry is designed to optimize the confident, stable handling of 27.5 wheels with plush high-volume tires—ideal for rugged, adventurous terrain.

Trail tuned

More relaxed frame geometry (compared to XC) and control-focused components deliver added control for trail riding conditions.

Download PDF

SizesXS, S, M, L, XL
ColorsGunmetal Black / Olive Green
FrameALUXX SL-Grade Aluminum
ForkRockShox Recon RL 120mm, Solo Air, Taper, 15x110 Maxle Lite
ShockN/A
HandlebarGiant Connect Trail, 780x31.8, [GA 690]
StemGiant Contact
SeatpostGiant Contact Switch dropper post with remote, 30.9
SaddleGiant Contact (neutral)
PedalsN/A
ShiftersSRAM SX Eagle
Front DerailleurN/A
Rear DerailleurSRAM NX Eagle
BrakesShimano MT400
Brake LeversShimano MT401
CassetteSRAM SX Eagle, 11x50
ChainSRAM SX Eagle
CranksetTruVativ Descendent 6k DUB, 30t
Bottom BracketSRAM DUB, press fit
RimsGiant AM 27.5 tubeless ready sleeve-joint rim, 30mm inner width
Hubs[F] Giant Tracker Performance Boost 15x110, sealed bearing [R] Giant Tracker Giant Sport Boost QR 141, loose ball
SpokesSapim
TiresMaxxis Ardent Race 27.5x2.6, folding, TR
WeightThe most accurate way to determine any bike’s weight is to have your local dealer weigh it for you. Many brands strive to list the lowest possible weight, but in reality weight can vary based on size, finish, hardware and accessories. All our bikes are designed for best-in-class weight and ride quality.

All specifications and prices listed are subject to change without notice.

Highlights

With its lightweight ALUXX SL aluminum frame, 27.5 wheels and high-volume tires, the new Fathom is a great choice for technical terrain and singletrack shredding. It blends the efficient ride quality of a classic hardtail with the confident ride quality of larger tires that absorb bumps and give you more traction—so you can tackle rougher trails with total control. The new frame is designed with trail-friendly geometry that includes a more relaxed head angle made for a 120mm suspension fork.

1 2 3 4 5 Highlights

Sizing Guide and Geometry

Sizing to be used as a reference only. Please check with a local authorized Liv or Giant dealer to determine the correct size.
Available sizes may vary from country to country.

S   163 cm5’4”  to 172 cm5’8”
M   171 cm5’7”  to 180 cm5’11”
L   179 cm5’10”  to 188 cm6’2”
XL   187 cm6’2”  to 198 cm6’6”
bike diagram
  SMLXL
Seat Tube Length (mm) (inch)39015.444517.548018.953020.9
Seat Tube Angle (degrees)73.5°73.5°73.5°73.5°
Top Tube Length (mm) (inch)5852360523.862524.664525.4
Head Tube Length (mm) (inch)1003.91104.31254.91405.5
Head Tube Angle (degrees)67.0°67.0°67.0°67.0°
Fork Rake (mm) (inch)421.7421.7421.7421.7
Trail (mm) (inch)108.24.3108.24.3108.24.3108.24.3
Wheelbase (mm) (inch)111043.7113144.5115345.4117446.2
Chain Stay Length (mm) (inch)42516.742516.742516.742516.7
Bottom Bracket Drop (mm) (inch)451.8451.8451.8451.8
Stack (mm) (inch)58823.159823.561124.162524.6
Reach (mm) (inch)41116.242816.944417.546018.1
Stand Over Height (mm) (inch)69127.273128.874529.378430.9
Handlebar Width (mm) (inch)78030.778030.778030.778030.7
Stem Length (mm) (inch)401.6502602.4702.8
Crank Length (mm) (inch)1706.71756.91756.91756.9
Wheel Size 27.5"27.5"27.5"27.5"

Technologies

ALUXX SL Aluminum Technology
OverDrive

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Reviews

All specifications and prices listed are subject to change without notice.