Giant Fathom 1
Details
Get Your Daily Dose Of Singletrack.
With a lightweight frame, 130mm suspension fork, and 27.5" wheels with high-volume tires, this hardtail offers loads of traction, speed, and fun on the trail.
Key Performance Factors:
- Trail-tuned design
Balanced geometry with a 75-degree seat tube angle puts the rider in a powerful pedaling position on climbs, while a slacker 66-degree head angle boosts confidence and control on technical descents.
- Responsive handling
The lightweight ALUXX SL aluminum hardtail frame offers agile acceleration and maneuverability to help riders climb, corner, and hammer the flats with efficiency and speed.
- Smooth control
Giant Crest 34 suspension fork with 130mm of travel absorbs roots, rocks, and ruts. Grippy, high-volume tires boost traction on rugged terrain. A dropper seatpost with a handlebar remote lets you adjust saddle height on the fly for confident positioning on changing terrain.
| FRAME SIZE | Small | Medium | Large |
|---|---|---|---|
| A - SEAT TUBE LENGTH (mm) | 380 | 430 | 465 |
| B - SEAT TUBE ANGLE | 75.0° | 75.0° | 75.0° |
| C - TOP TUBE LENGTH (mm) | 592 | 612 | 639 |
| D - HEAD TUBE LENGTH (mm) | 95 | 95 | 105 |
| E - HEAD TUBE ANGLE | 66.0° | 66.0° | 66.0° |
| F - FORK RAKE (mm) | 44 | 44 | 44 |
| G - TRAIL (mm) | 113 | 113 | 113 |
| H - WHEELBASE (mm) | 1154 | 1174 | 1203 |
| I - CHAIN STAY LENGTH (mm) | 435 | 435 | 435 |
| J - BOTTOM BRACKET DROP (mm) | 60 | 60 | 60 |
| K - STACK (mm) | 622 | 622 | 631 |
| L - REACH (mm) | 425 | 445 | 470 |
| M - STAND OVER HEIGHT (mm) | 712 | 726 | 746 |
| N - HANDLEBAR WIDTH (mm) | 780 | 780 | 780 |
| O - STEM LENGTH (mm) | 40 | 40 | 50 |
| P - CRANK LENGTH (mm) | 165 | 170 | 170 |
| Q - WHEEL SIZE | 27.5" | 27.5" | 27.5" |
| Frame SIze | Rider Height (cm) | Rider Height (in) |
|---|---|---|
| Small | 163 - 172 | 5'3" - 5'8" |
| Medium | 171 - 180 | 5'7" - 5'11" |
| Large | 179 - 188 | 5'10" - 6'2" |
Specs
| Frame | ALUXX SL-grade aluminum, 12x148mm thru-axle |
|---|---|
| Fork | Giant Crest 34 SL RCL, 130mm, 44mm offset, Boost 15x110 |
| Rims | Giant AM 27.5, tubeless ready sleeve-joint rim, 30mm inner width |
| Hubs | Alloy, sealed bearing |
| Spokes | Stainless |
| Tires | Maxxis Ardent Race 27.5x2.6, folding, TR , tubeless |
| Bottom Bracket | SRAM SX PowerSpline, threaded |
| Crankset | SRAM SX Eagle, 30t S:165mm, M:170mm, L:170mm, XL:170mm |
| Shifters | SRAM SX Eagle, 1x12 |
| Rear Derailleur | SRAM NX Eagle |
| Cassette/Freewheel | SRAM SX Eagle, 11x50 |
| Chain | SRAM SX Eagle |
| Brakes | Shimano BR-MT420/410, hydraulic |
| Rotors | Shimano RT-26 rotors, 180mm |
| Brake Levers | Shimano BR-MT401 |
| Handlebars | Giant Contact SL TR35, 780x35mm |
| Tape/Grips | Giant Sole-O |
| Stem | Giant Contact SL 35 S:40mm, M:40mm, L:50mm, XL:50mm |
| 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 |
| Pedals | Sold Separately |
| Accessories & Extras | Tubeless prepared |
* Subject to change without notice.
Part Numbers
| Option | UPC | MPN | Store SKU |
|---|---|---|---|
| Black / Small | 04712878966673 | 1043001124 | 24F15212845K |
| Black / Medium | 04712878966680 | 1043001125 | 24F1559740K |
| Black / Large | 04712878966697 | 1043001127 | 24F15773686K |