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Fathom 1

2021

$2,099

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Get your dose of singletrack on a fun hardtail that puts you in control. The combination of a lightweight hardtail frame, 130mm suspension fork and 27.5 wheels with wide rims and high-volume tires delivers loads of traction, speed and fun on the trail.

With its updated ALUXX SL aluminum frame, quick-handling 27.5 wheels and high-volume tires, 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 frame is designed with trail-friendly geometry that includes a more relaxed head angle and a 130mm suspension fork.

Key Performance Factors

Trail Tuned Design

Balanced geometry with a 75-degree seattube angle puts the rider in a powerful pedaling position on the climbs, while a slacker 66-degree head angle boosts confidence and control on technical descents.ALUXX SL aluminum frameset is hand-built in-house by the world leader in aluminum engineering.

Responsive Handling

Lightweight ALUXX SL aluminum hardtail frame offers agile acceleration and maneuverability to help riders climb, corner and hammer the flats with efficiency and speed.

Smooth Control

Giant Crest 34 suspension fork with 130mm of travel absorbs roots, rocks and ruts. Grippy, high-volume tires boost traction on rugged terrain. And a dropper seatpost with handlebar remote lets you adjust saddle height on the fly for confident positioning on changing terrain.

Specs
  • Sizes
    S, M, L, XL
  • Colours
    Teal
  • Frame
    ALUXX SL-Grade Aluminum
  • Fork
    Giant Crest 34 RCL, 130mm, Boost 15x110, *note: early production bikes may be substituted with RockShox 35 Silver TK, 130mm, Boost 15x110
  • Shock
    N/A
  • Handlebar
    Giant Contact Trail, 35
  • Stem
    Giant Contact SL 35
  • Seatpost
    Giant Contact Switch dropper with remote, 30.9
  • Saddle
    Giant Romero
  • Pedals
    N/A
  • Shifters
    SRAM SX Eagle
  • Front Derailleur
    N/A
  • Rear Derailleur
    SRAM NX Eagle
  • Brakes
    Shimano MT420 hydraulic 4-piston, 180mm, *note: early production bikes may be substituted with Shimano MT200 hydraulic, 180mm
  • Brake Levers
    Shimano MT401, *note: early production bikes may be substituted with Shimano MT201
  • Cassette
    SRAM SX Eagle, 12-speed, 11x50
  • Chain
    SRAM SX Eagle
  • Crankset
    SRAM SX Eagle, DUB, 30t
  • Bottom Bracket
    SRAM DUB, press fit
  • Rims
    Giant AM 27.5 wheelset, alloy, 30mm inner
  • Hubs
    Giant Performance Tracker, [F] Boost 15x110mm [R] Boost 12x148mm
  • Spokes
    Sapim
  • Tires
    Maxxis Ardent Race 27.5x2.6, folding, TR
  • Weight
    The 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 prices and specifications are subject to change without notice.

Highlights

Built on a lightweight ALUXX SL aluminum frameset with progressive trail geometry, this hardtail features 27.5-inch wheels with grippy, high-volume 2.6-inch tires. It has a number of trail-specific features including a 130mm suspension fork and dropper seatpost. Here’s a look at Fathom’s key technologies:

Fathom with interactive tooltips

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.

Selection of a button will change the units measurement displayed throughout the entire sizing guide section.
  • S
      163 cm5’4”  to 172 cm5’8”
  • M
      171 cm5’7”  to 180 cm5’11”
  • L
      179 cm5’10”  to 188 cm6’2”
bike diagram with measurements referenced in table that follows
Selection of a button will change the units measurement displayed throughout the entire sizing guide section.
  SML
ASeat Tube Length (mm) (inch)3801543016.946518.3
BSeat Tube Angle (degrees)75.0°75.0°75.0°
CTop Tube Length (mm) (inch)59223.361224.163925.2
DHead Tube Length (mm) (inch)953.7953.71054.1
EHead Tube Angle (degrees)66.0°66.0°66.0°
FFork Rake (mm) (inch)441.7441.7441.7
GTrail (mm) (inch)1134.41134.41134.4
HWheelbase (mm) (inch)115445.4117446.2120347.4
IChain Stay Length (mm) (inch)43517.143517.143517.1
JBottom Bracket Drop (mm) (inch)602.4602.4602.4
KStack (mm) (inch)62224.562224.563124.8
LReach (mm) (inch)42516.744517.547018.5
MStand Over Height (mm) (inch)7122872628.674629.4
NHandlebar Width (mm) (inch)78030.778030.778030.7
OStem Length (mm) (inch)401.6401.6502
PCrank Length (mm) (inch)1656.51706.71706.7
QWheel Size 27.5"27.5"27.5"

Techs & Features

ALUXX SL Aluminum Technology
OverDrive
Tubeless System

Reviews

All prices and specifications are subject to change without notice.