Giant Fathom 2 29 (2020) Mountain Bike

In stock
Pick up in Old Forge store today! (Delivery available or pick-up in Saratoga in 1-2 weeks; call 315-369-6672, x1)
Excl. tax

*Note - We can not ship Bicycles, They are only available for in store pick up.

**If we are out of stock in your size, check with us and we may be able to place a special order.

Crank up steep climbs with smooth-rolling efficiency and swoop down singletrack descents with stability and speed. This aluminum hardtail 29er delivers a balanced ride quality on XC terrain.

Built on an ALUXX SL aluminum frame, Fathom 29 features updated geometry that produces a stable ride quality for challenging XC trails. The frame is optimized for a 100mm suspension fork giving you efficiency on the climbs and total control on the descents.

Key Performance Factors

Proven alloy performance

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

Balance and stability

Frame geometry is designed to optimize the balance and roll-over capabilities of 29-inch wheels.

XC control

Suspension fork offers 100mm of smooth travel for added XC control.


Sizes S, M, L, XL
Colors Silver, Pure Red
Frame ALUXX SL-Grade Aluminum
Fork Suntour Raidon XC LO-R, 100mm, tapered, 15x110 QR
Shock N/A
Handlebar Giant Connect Trail, 780x31.8, [GA 690]
Stem Giant Contact
Seatpost Giant Connect, 30.9
Saddle Giant custom
Pedals platform
Shifters SRAM SX Eagle
Front Derailleur N/A
Rear Derailleur SRAM SX Eagle
Brakes Tektro HDM 275
Brake Levers Tektro HDM 275
Cassette SRAM SX Eagle, 11x50
Chain SRAM SX Eagle
Crankset SRAM Eagle SX Eagle DUB, 30t
Bottom Bracket SRAM DUB, press fit
Rims Giant XCT 29” tubeless ready sleeve-joint rim, 25mm inner width
Hubs [F] Giant Tracker Performance Boost 15x110, sealed bearing [R] Giant Tracker Giant Sport Boost QR 141, loose ball
Spokes Sapim
Tires [F] Maxxis Forekaster 2, , EXO/TR[R] Maxxis 29x2.35 Rekon Race, foldable, , EXO/T
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 Giant bikes are designed for best-in-class weight and ride quality.

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

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   5’4” 5’4”/163 cm to 5’8”/172 cm 5’8”
M   5’7” 5’7”/171 cm to 5’11”/180 cm 5’11”
L   5’10” 5’10”/179 cm to 6’2”/188 cm 6’2”
XL   6’2” 6’2”/187 cm to 6’6”/198 cm 6’6”
bike diagram


    S M L XL
A Seat Tube Length (inch) 15.4 17.5 18.9 20.9
B Seat Tube Angle 73.5° 73.5° 73.5° 73.5°
C Top Tube Length (inch) 23 23.8 24.6 25.4
D Head Tube Length (inch) 3.7 3.9 4.5 5.1
E Head Tube Angle 69.0° 69.0° 69.0° 69.0°
F Fork Rake (inch) 1.7 1.7 1.7 1.7
G Trail (inch) 3.9 3.9 3.9 3.9
H Wheelbase (inch) 43.3 44.1 45 45.8
I Chain Stay Length (inch) 17.4 17.4 17.4 17.4
J Bottom Bracket Drop (inch) 2.2 2.2 2.2 2.2
K Stack (inch) 23.7 23.9 24.5 25
L Reach (inch) 16 16.7 17.4 18
M Stand Over Height (inch) 27.6 29.1 29.6 30.8
N Handlebar Width (inch) 30.7 30.7 30.7 30.7
O Stem Length (inch) 2.4 2.8 3.1 3.5
P Crank Length (inch) 6.7 6.9 6.9 6.9
Q Wheel Size 29" 29" 29" 29"
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