This state-of-the-art aluminum material is made predominantly from 6011 alloy and delivers best-in-class strength-to-weight ratios. The frameset features unique welding technologies for a high-performance ride quality.
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Crank up steep climbs with smooth-rolling efficiency. Swoop down singletrack descents with stability and speed. This aluminium hardtail 29er delivers a balanced ride quality on XC terrain.
Built on an ALUXX SL aluminium frame, the Fathom 29 features updated geometry that produces a stable ride quality for challenging XC trails. The frame is optimised for a 130mm suspension fork for smooth control on the descents. An updated Giant WheelSystem comes with tubeless tyres already set up, making it easy to experience added efficiency and control, plus a reduced risk of flats on technical terrain.
Key Performance Factors
Trail Tuned Design
ALUXX SL aluminium frameset is hand-built in-house by the world leader in aluminium engineering.
Responsive Handling
Frame geometry is designed to optimise the balance and roll-over capabilities of 29-inch wheels.
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. And a dropper seatpost with handlebar remote lets you adjust saddle height on the fly for confident positioning on changing terrain.
Highlights
Built on a lightweight ALUXX SL aluminum frameset with progressive trail geometry, Fathom 29 is designed for the added stability and roll-over capabilities of 29-inch wheels with grippy, high-volume 2.5-inch tires. It has a number of trail-specific features including a 130mm suspension fork and dropper seatpost. Here’s a look at its key technologies:
Techs & Features
ALUXX SL Aluminum Technology
This High-Performance level, state-of-the-art aluminum material is made predominantly from 6011 alloy and delivers best-in-class strength-to-weight ratios. These framesets also feature unique welding technologies for a high-performance ride quality.
OverDrive
Giant’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.
Tubeless System
Fewer flat tires. Greater traction. Less rolling resistance and a smoother, faster ride. Giant’s Tubeless System makes it easier than ever to experience all these benefits.
Geometry
| S | M | L | XL | ||
|---|---|---|---|---|---|
| A | Seat Tube Length (mm) (inch) | 38015 | 43016.9 | 46518.3 | 49519.5 |
| B | Seat Tube Angle (degrees) | 75.0° | 75.0° | 75.0° | 75.0° |
| C | Top Tube Length (mm) (inch) | 59223.3 | 61224.1 | 63925.2 | 66226.1 |
| D | Head Tube Length (mm) (inch) | 953.7 | 953.7 | 1054.1 | 1154.5 |
| E | Head Tube Angle (degrees) | 66.0° | 66.0° | 66.0° | 66.0° |
| F | Fork Rake (mm) (inch) | 441.7 | 441.7 | 441.7 | 441.7 |
| G | Trail (mm) (inch) | 1224.8 | 1224.8 | 1224.8 | 1224.8 |
| H | Wheelbase (mm) (inch) | 115445.4 | 117446.2 | 120347.4 | 122748.3 |
| I | Chain Stay Length (mm) (inch) | 43517.1 | 43517.1 | 43517.1 | 43517.1 |
| J | Bottom Bracket Drop (mm) (inch) | 602.4 | 602.4 | 602.4 | 602.4 |
| K | Stack (mm) (inch) | 62224.5 | 62224.5 | 63124.8 | 64025.2 |
| L | Reach (mm) (inch) | 42516.7 | 44517.5 | 47018.5 | 49019.3 |
| M | Stand Over Height (mm) (inch) | 73028.7 | 74529.3 | 76530.1 | 79031.1 |
| N | Handlebar Width (mm) (inch) | 78030.7 | 78030.7 | 78030.7 | 78030.7 |
| O | Stem Length (mm) (inch) | 401.6 | 401.6 | 502 | 502 |
| P | Crank Length (mm) (inch) | 1656.5 | 1706.7 | 1706.7 | 1706.7 |
| Q | Wheel Size | 29" | 29" | 29" | 29" |
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All specifications listed are subject to change without notice.