Giant Fathom 29
Specifications
Frame ALUXX SL-grade aluminum, 12x148mm thru-axle
Fork Giant STL 34 RCL, 140mm, 44mm offset, 15x110mm thru-axle, custom tuned
Handlebar Giant Contact SL TR35, 20mm rise, 35mm
Grips Giant Sole-O
Stem Giant Contact SL 35
Seatpost
Giant Contact Switch AT adjustable dropper, remote
S: 110-140mm travel
/ 30.9 x 395mm
M: 140-170mm travel / 30.9 x 470mm
L, XL: 170-200mm
travel / 30.9 x 530mm
Saddle Giant Romero
Shifters Shimano CUES U6000, 1x10
Rear Derailleur Shimano CUES RD-U6000
Brakes
Shimano BR-MT420, hydraulic
Shimano RT-26 rotors [F] 180mm, [R]
180mm
Brake Levers Shimano Deore BL-MT401
Cassette Shimano CUES, LinkGlide, 10-speed, 11x48
Chain KMC X11
Crankset Shimano CUES U6000, 30t, 52mm chainline
Bottom Bracket Shimano, threaded
Rims Giant AM 29, tubeless ready sleeve-joint rim, 30mm IW
Hubs
[F] Giant MTB alloy, 6-bolt, sealed
[R] Giant MTB alloy, 6 bolt,
sealed
Spokes Stainless
Tires[F] Maxxis Minion DHF, 29x2.5 WT, foldable, EXO/TR
[R] Maxxis
Aggressor, 29x2.5 WT, foldable, EXO/TR
Geometry

S | M | L | XL | ||
---|---|---|---|---|---|
A | Reach | 425 | 445 | 470 | 490 |
B | Stack | 622 | 622 | 631 | 640 |
C | Head Tube Angle | 66.0° | 66.0° | 66.0° | 66.0° |
D | Bottom Bracket Drop | 60 | 60 | 60 | 60 |
E | Wheelbase | 1157 | 1177 | 1206 | 1230 |
F | Chainstay Length | 438 | 438 | 438 | 438 |
G | Head Tube Length | 95 | 95 | 105 | 115 |
H | Top Tube Length | 592 | 612 | 639 | 662 |
I | Seat Tube Angle | 75.0° | 75.0° | 75.0° | 75.0° |
J | Stand Over Height | 727 | 746 | 764 | 791 |
All measurements in degrees or millimetres |
Sizing Guide
The sizing chart is a great place to start when picking your next bike but everyone will fit a bike a bit differently. Your torso, arm, and leg lengths all play into what size of bike you may need. Plus, there's your own personal preference.
We always recommend swinging by the shop and taking the bike that you're looking for a spin to see how it feels. If you're unable to come by, looking at the geometry of your current bike and comparing it is a good place to start. If you have any further questions, our customer service team is there to help.
Size | Height | |
---|---|---|
Imperial | Metric | |
S | 5'4" - 5'8" | 163 - 172cm |
M | 5'7" - 5'11" | 171 - 180cm |
L | 5'10" - 6'2" | 179 - 188cm |
XL | 6'2" - 6'6" | 187 - 198cm |