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Giant Fathom 29 1

Giant Fathom 29 1
  • Color: Amber Glow
  • Color: Metallic Black
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Not everyone needs a razor-sharp hard tail mountain bike refined in World Cup and World Championship races. Sometimes a hard tail should be more fun than fast! Welcome to the Fathom 29 1! The Fathom 29 series of mountain bikes are built around a hydroformed ALUXX SL-Grrade aluminum frame that boasts a stable geometry for tackling technical trails and rocky descents. A slack head tube and generous suspension travel delivers confidence when the going gets steep! The ALUXX SL-Grade frame boasts light weight and high torsional strength, making every challenging stretch of singletrack more fun. A tapered OverDrive head tube helps keep the front wheel where you point it in technical terrain, while a press-fit bottom bracket anchors the crankset for flex-free power delivery. Internal cable routing adds a sleek look to the Fathom 29 1. An air-adjustable Crest 34 SL RCL suspension fork with 130mm (that was not a misprint) of travel helps keep the front wheel planted.

The Fathom 29 1’s SRAM 12-speed Eagle drivetrain brings precise operation at your fingertips. An SX Eagle shifter is matched with an NX Eagle rear derailleur, shifting across an SX Eagle 11-50T cassette. An SX Eagle alloy crankset with a 30T single chainring does power delivery duty. Every component works in concert so you only have to think about the trail in front of you.

Rugged tubeless alloy AM 29 wheels are wrapped with meaty Maxxis tubeless tires. The 29x2.5” tires feature an aggressive tread pattern for excellent control when charging through rock gardens and root “fun houses”. A 30mm wide rim helps to spread out the tread, improving control in high speed turns and under hard braking. Shimano hydraulic disc brakes deliver confident stopping power in all conditions, rain or shine. A Giant dropper post with a bar-mounted remote switch helps get the saddle out of the way on steep drop-ins. An alloy bar and stem combination completes the cockpit.


Geometry Chart:
A SEAT TUBE LENGTH (mm) 380 430 465 495
B SEAT TUBE ANGLE 75.0° 75.0° 75.0° 75.0°
C TOP TUBE LENGTH (mm) 592 612 639 662
D HEAD TUBE LENGTH (mm) 95 95 105 115
E HEAD TUBE ANGLE 66.0° 66.0° 66.0° 66.0°
F FORK RAKE (mm) 44 44 44 44
G TRAIL (mm) 122 122 122 122
H WHEELBASE (mm) 1154 1174 1203 1227
I CHAIN STAY LENGTH (mm) 435 435 435 435
J BOTTOM BRACKET DROP (mm) 60 60 60 60
K STACK (mm) 622 622 631 640
L REACH (mm) 425 445 470 490
M STAND OVER HEIGHT (mm) 730 745 765 790
N HANDLEBAR WIDTH (mm) 780 780 780 780
O STEM LENGTH (mm) 40 40 50 50
P CRANK LENGTH (mm) 165 170 170 170
Q WHEEL SIZE 29" 29" 29" 29"
Small 163 cm to 172 cm
Medium 171 cm to 180 cm
Large 179 cm to 188 cm
X-Large 187 cm to 198 cm


Frame ALUXX SL-Grade Aluminum
Fork Giant Crest 34 RCL, air adjustable, 130mm, 44mm offset, Boost 15x110
Rims Giant AM 29, tubeless ready sleeve-joint rim, 30mm inner width
Hubs alloy, sealed
Spokes stainless
Tires [F] Maxxis Minion DHF, 29x2.5 WT, EXO/TR [R] Maxxis Aggressor, 29x2.5 WT, foldable, EXO/TR
Bottom Bracket SRAM DUB, press fit
Crankset SRAM SX Eagle, 30t
Shifters SRAM SX Eagle, 1x12
Rear Derailleur SRAM NX Eagle
Cassette/Freewheel SRAM SX Eagle, 11-50T
Chain SRAM SX Eagle 12 speed
Brakes Shimano BR-MT420/410, hydraulic,
Rotors Shimano RT-26 rotors [F]180mm, [R]180mm
Brake Levers Shimano BR-MT401 hydraulic
Handlebars Giant Contact TR35, 780x35mm
Tape/Grips Giant Sole-O
Stem Giant Contact SL 35
Seatpost Giant Contact Switch dropper, remote S: 125mm travel / 30.9 x 395mm M: 125mm travel / 30.9 x 395mm L: 150mm travel / 30.9 x 440mm XL: 170mm travel / 30.9 x 450mm
Saddle Giant Romero
Accessories & Extras tubeless prepared, 2.5" max tire size, 32t max chainring size

* Subject to change without notice.