Fathom 3

2019

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Starting From £35

Get your dose of singletrack on a fun hardtail that puts you in control. Featuring new 27.5 wheels and tyres, Fathom helps you climb, corner and descend with confidence.

With its lightweight ALUXX SL aluminum frame and new 27.5 wheels and tyres, 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 plush 27.5 tyres. The larger tyres 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 tyres, and is 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.

Techs & Features

ALUXX SL Aluminium Technology
OverDrive
Tubeless System

Geometry

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.
  XSSMLXL
ASeat Tube Length (mm) (inch)37014.639015.444517.548018.953020.9
BSeat Tube Angle (degrees)73.5°73.5°73.5°73.5°73.5°
CTop Tube Length (mm) (inch)56522.25852360523.862524.664525.4
DHead Tube Length (mm) (inch)953.71003.91104.31254.91405.5
EHead Tube Angle (degrees)67.0°67.0°67.0°67.0°67.0°
FFork Rake (mm) (inch)421.7421.7421.7421.7421.7
GTrail (mm) (inch)1084.31084.31084.31084.31084.3
HWheelbase (mm) (inch)108942.9111043.7113144.5115345.4117446.2
IChain Stay Length (mm) (inch)42516.742516.742516.742516.742516.7
JBottom Bracket Drop (mm) (inch)451.8451.8451.8451.8451.8
KStack (mm) (inch)5842358823.159823.561124.162524.6
LReach (mm) (inch)39215.441116.242816.944417.546018.1
MStand Over Height (mm) (inch)66726.369127.273128.874529.378430.9
NHandlebar Width (mm) (inch)78030.778030.778030.778030.778030.7
OStem Length (mm) (inch)401.6401.6502602.4702.8
PCrank Length (mm) (inch)1706.71706.71756.91756.91756.9
QWheel Size 27.5"27.5"27.5"27.5"27.5"
Specs
  • Sizes
    S, M, L, XL
  • Colours
    Matte Metallic Black / Matte Black / Vibrant Blue
  • Frame
    ALUXX SL-Grade Aluminum
  • Fork
    Suntour SF19-Raidon 32, Boost LOR, tapered steerer, QR 15x110mm
  • Shock
    N/A
  • Handlebar
    Giant Connect Trail, 780mm x 31.8mm
  • Stem
    Giant Connect, 8-degree
  • Seatpost
    Giant Sport
  • Saddle
    Giant Contact (neutral)
  • Pedals
    MTB Caged, 9/16
  • Shifters
    Shimano Alivio, 2x9
  • Front Derailleur
    Shimano FD-M4020-D
  • Rear Derailleur
    Shimano Deore, Shadow+
  • Brakes
    Tektro HDM 275 [F] 180mm [R] 160mm, hydraulic disc
  • Brake Levers
    Tektro HDM 275
  • Cassette
    Shimano HG400-9, 12x36
  • Chain
    KMC X9
  • Crankset
    Shimano FC-MT210 Boost, 22/36
  • Bottom Bracket
    Shimano Press Fit
  • Rims
    Giant AM 27.5, tubeless ready, sleeve-joint rim, 30mm inner width
  • Hubs
    [F] Giant Tracker Performance Boost 15x110mm, sealed bearing [R] Giant Tracker Sport Boost QR 141, loose ball
  • Spokes
    Sapim
  • Tyres
    Maxxis Ardent 27.5x2.4, wire, 60 tpi, TR , tubeless
  • 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.

Every effort has been made to ensure accuracy throughout this website. However, Giant reserves the right to change bike specifications, features, prices and colours without prior notice.

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Question and Answers

Every effort has been made to ensure accuracy throughout this website. However, Giant reserves the right to change bike specifications, features, prices and colours without prior notice.

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