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Giant Fathom 2 Complete Mountain Bike 2020

sku# 173632
Giant - Fathom 2 Complete Mountain Bike 2020
Model Info
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Product Info

The Giant Fathom 1 Complete Mountain Bike is a hardtail bike with enduro aspirations. The more trail oriented geometry, 27.5 wheels, and a more relaxed head angle make this a nice in-betweener or entry level bike for those primarily riding cross-country but thinking of stepping up to steeper and more technical terrain.

Product Details


ALUXX SL Aluminum ConstructionExtremely lightweight framesets featuring high-performance strength-to-weight ratios, predominantly featuring 6011 alloy. A heritage of craftsmanship combined with unmatched manufacturing capabilities gives Giant the unique ability to monitor every step of the aluminum frame-building process. Through Giant's cutting-edge materials science, proprietary forming techniques, and attention to detail, we are constantly advancing aluminum performance to create bikes that are lighter, stronger and stiffer. The difference can be felt in the ride. Every aluminum bike bearing the ALUXX Aluminum Technology label must live up to the highest standards and meet the tightest tolerances of any aluminum frame in the world.

OverDriveGiant’s original oversized fork steerer tube technology. Designed to provide precise front-end steering performance, the system’s oversized headset bearings (1 1/4” lower and 1 1/8” upper for road, 1 1/2” lower and 1 1/8” upper for mountain) and tapered steerer tube work in conjunction to provide optimal steering stiffness.


Suntour Raidon XC LO-RA solid XC workhorse, the Raidon is a durable high performance driven fork ready to tackle trails for multiple seasons with minimal maintenance. Sealed cartridge design with lockout and and external rebound adjuster. The air spring design allows for riders to set their preferred pressure to make the fork feel how they want. Light weight 32mm stanchion tubes and chassis make for a good handling and stiff XC fork.

Fork AdjustmentsHydraulic Lockout / External Hydraulic Rebound Adjustment / Adjustable Air Volume with Preload Adjust

Drive Train

SRAM SX Eagle™The latest addition to SRAM's 12-speed juggernaut, SX Eagle brings their amazing gear range, chain retention, and reliability to the masses. Say goodbye to your front derailleur and start pedaling: this group can handle everything from XC tours to all-mountain riding.


Tektro HD-M275 Hydraulic Disc BrakesetThis dual piston brake is easy to maintain, offers excellent fade-free performance, and comes without a huge weight penalty. With 160mm rotors and comfortable levers.


Giant AM 27.5 30mm WheelsAt 30mm wide, this tough aluminum wheelset is a great platform for today's wide trail tires. It features Tracker Performance hubs for a smooth and long-lasting ride.

Maxxis Ardent Race TiresThe Ardent Race tire from Maxxis is ideally suited for technical XC race courses and endurance-length events. With its medium-height tread, the Ardent Race bridges the gap between the XC-oriented Ikon and the trail-oriented Ardent. The center knobs are ramped to reduce rolling resistance, and the side knobs are angled and stepped to provide great biting traction in corners. Choose the Ardent Race for your next demanding XC race or epic trail ride.

Additional Features

Giant Contact Switch Dropper PostTrail conditions change in the blink of an eye -- transition from steep climbs to gnarly descents and never skip a beat with the Contact Switch seatpost.

Shipping Information

Oversize ItemShips within the continental U.S. for $69. HI and AK shipping available. Please call for details.


  • Biking Type: Mountain
  • Used For: XC
  • Wheel Size: 27.5" (650b)
  • Gearing: 1 x 12
  • Handlebar Shape: Riser
  • Frame Material: Aluminum Alloy
  • Brake Type: Hydraulic Disc
  • Water Bottle Mounts: 2
  • Fork: Suntour Raidon XC LO-R
  • Stanchion Diameter (mm): 32
  • Front Travel (mm): 100
  • Shifters: SRAM SX Eagle™
  • Rear Derailleur: SRAM SX Eagle™
  • Crankset: SRAM SX Eagle™ DUB 30t
  • Cassette: SRAM SX Eagle™ 11x50t
  • Chain: SRAM SX Eagle™
  • Bottom Bracket: SRAM DUB Press Fit
  • Brake Levers: Tektro HDM 275
  • Brake Calipers: Tektro HDM 275
  • Rotors: 160mm
  • Handlebar: Giant Connect Trail, 780 x 31.8mm
  • Stem: Giant Contact
  • Saddle: Giant Contact
  • Seatpost: Giant Contact Switch Dropper Post with Remote, 30.9mm
  • Hubs: [F] Giant Tracker Performance [R] Giant Tracker Giant Sport Boost
  • Rims: Giant DH 27.5, Tubeless Ready, 30mm
  • Spokes: Sapim
  • Tires: Maxxis Ardent Race Folding TR | 27.5 x 2.6"
  • Warranty: Limited Lifetime (Frame)
Size S M L XL
Top Tube (mm) 585 605 625 645
Seat Tube (mm) 390 445 480 530
Stack (mm) 588 598 611 625
Reach (mm) 411 428 444 460
Standover Height (mm) 691 731 745 784
Head Tube Angle (°) 67.0 67.0 67.0 67.0
Seat Tube Angle (°) 73.5 73.5 73.5 73.5
Chainstay Length (mm) 425 425 425 425
Bottom Bracket Drop (mm) 45 45 45 45
Head Tube Length (mm) 100 110 125 140
Wheelbase (mm) 1110 1131 1153 1174

Other Notes

Giant products can only be shipped within the United States



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