2023 Salsa Timberjack 27.5+ vs 2025 Giant Fathom 29
The M is the Giant Fathom 29 size closest to your M Salsa Timberjack 27.5+. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Giant Fathom 29
Compared with the Salsa Timberjack 27.5+ in M, the Giant Fathom 29 in M places the top of the head tube 15 mm higher and 9 mm further back, relative to the bottom bracket. Its wheelbase is 13 mm longer, which can contribute to stability at speed.
- Frame stack
- +15 mm
- Higher front end
- Frame reach
- −9 mm
- Shorter frame reach
- Wheelbase
- +13 mm
- Longer: steadier at speed
- Head angle
- −0.4°
- Slacker: calmer steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Salsa Timberjack 27.5+ is drawn. The Giant Fathom 29 numbers we have for size M are missing the chainstay length.
Geometry side by side
| Measurement | Salsa Timberjack 27.5+ M | Giant Fathom 29 M | Difference |
|---|---|---|---|
| Reach | 453.6 | 445 | −9 mm |
| Stack | 607.4 | 622 | +15 mm |
| Head tube angle | 66.4 | 66 | −0.4° |
| Seat tube angle | 75.1 | 75 | −0.1° |
| Effective top tube | 615.3 | 612 | −3 mm |
| Chainstay length | 420.0 | not listed | |
| Wheelbase | 1164.5 | 1177 | +13 mm |
| BB drop | 56.6 | not listed | |
| Standover | 742.1 | 746 | +4 mm |
| Seat tube length | 395.0 | 430 | +35 mm |
| Fork length | 543.0 | not listed | |
| Head tube length | 105.0 | not listed | |
| BB height | not listed | 314 |
Differences are the Giant Fathom 29 minus the Salsa Timberjack 27.5+. Full charts: 2023 Salsa Timberjack 27.5+, 2025 Giant Fathom 29.
Where each sits in its class
Salsa Timberjack 27.5+Giant Fathom 29
Each bike is ranked against the other trail bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Salsa Timberjack 27.5+SLX 27.5+ | Giant Fathom 29Fathom 29 |
|---|---|---|
| Frame | Salsa Alloy V2 | Giant Fathom 29 |
| Fork | RockShox 35 Gold | Giant STL 34 |
| Shifter | Shimano Deore M6100 | Shimano CUES SL-6000 |
| Derailleur | Shimano SLX M7100 | Shimano CUES U6000 |
| Cassette | Shimano M6100-12 Deore | Shimano CS-LG300 |
| Chain | Shimano Deore M6100 | KMC X11 |
| Crankset | Shimano MT510 | Shimano CUES U6000 |
| Tire | Maxxis Minion DHF, Maxxis Rekon | Maxxis Minion DHF, Maxxis Aggressor |
| Hub | Shimano MT400-B, Shimano MT410-B | not listed |
| Rim | WTB ST i40 | not listed |
| Brake | Shimano MT401 | Shimano MT420 |
| Rotor | Shimano SM-RT10 | Shimano RT-26 |
| Handlebar | Race Face Chester | Giant Contact SL TR35 |
| Stem | Salsa Guide Trail | Giant Contact SL 35 |
| Grips | Salsa File Tread | Giant Sole-O |
| Headset | FSA Orbit 1.5E | not listed |
| Dropper post | TranzX YSP05 | Giant Contact Switch AT |
| Saddle | WTB Volt | Giant Romero |
| Chainring | not listed | Shimano CUES U6030 |
| Wheelset | not listed | Giant AM 29 |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
