Giant Fathom 3

Giant Fathom 3
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Gateway to singletrack.

Get your dose of singletrack on a fun hardtail that puts you in control. Climb, corner and descend with confidence.

With its lightweight ALUXX SL aluminum frame and trail-friendly geometry, Fathom is a great choice for XC terrain and singletrack shredding. It blends the efficient ride quality of a classic hardtail with the can-do capabilities of an all-round off-roader. Engineered to optimize its 27.5 wheel platform, it has trail-friendly geometry including a more relaxed head angle made for a 120mm suspension fork.


Frame ALUXX SL-Grade Butted Aluminum
Fork Suntour Raidon XC LO-R, OverDrive Tapered Steerer, 120mm
Rims/Wheels Giant XC-2 Tubeless, 27.5", Disc
Hubs Giant Sport Tracker, 28h
Spokes Sapim
Tires Maxxis Ardent Tubeless, 27.5x2.25", 60 TPI
Crankset FSA Comet
Chainrings 26/36
Bottom Bracket FSA, Press Fit
Chain KMC X9
Front Derailleur Shimano Deore
Rear Derailleur Shimano Deore, Shadow
Cassette/Rear Cogs Shimano HG400, 12-36, 9-Speed
Shifters Shimano Alivio
Handlebars Giant Connect Trail, 31.8
Stem Giant Connect
Brake Levers Shimano M315
Brakes Shimano M315 Hydraulic Disc, [F] 180mm [R] 160mm
Pedals Platform MTB
Saddle Giant Contact, Neutral
Seat Post Giant Contact Switch, 30.9, [XS-S] 100mm, [M] 125mm, [L-XL] 150mm

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Yellow/Black/Blue / X-Small 4712878177314 80039813 FAT24348158S
Yellow/Black/Blue / Small 4712878177321 80039814 FAT23790796S
Yellow/Black/Blue / Medium 4712878177338 80039815 FAT23646211M
Yellow/Black/Blue / Large 4712878177345 80039816 FAT23243307L
Yellow/Black/Blue / X-Large 4712878177352 80039817 FAT24768185L