2021 Giant Fathom 29 vs 2021 Salsa Timberjack 27.5+
The S is the Salsa Timberjack 27.5+ size closest to your S Giant Fathom 29. 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 Salsa Timberjack 27.5+
Compared with the Giant Fathom 29 in S, the Salsa Timberjack 27.5+ in S places the top of the head tube 23 mm lower and 9 mm further forward, relative to the bottom bracket. Its wheelbase is 11 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −23 mm
- Lower front end
- Frame reach
- +9 mm
- Longer frame reach
- Wheelbase
- −12 mm
- Shorter: quicker to change direction
- Head angle
- +0.4°
- Steeper: sharper steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Giant Fathom 29, SSalsa Timberjack 27.5+, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Giant Fathom 29 S | Salsa Timberjack 27.5+ S | Difference |
|---|---|---|---|
| Reach | 425 | 433.6 | +9 mm |
| Stack | 622 | 599 | −23 mm |
| Head tube angle | 66.0° | 66.4 | +0.4° |
| Seat tube angle | 75.0° | 75.1 | +0.1° |
| Chainstay length | 435 | 420-437 | |
| Wheelbase | 1154 | 1142.5 | −12 mm |
| BB drop | 60 | 56.6 | −3 mm |
| Standover | 730 | 705.2 | −25 mm |
| Seat tube length | 380 | 370 | −10 mm |
| Head tube length | 95 | 100 | +5 mm |
| Effective top tube | not listed | 594.1 | |
| Fork length | not listed | 510.5 |
Differences are the Salsa Timberjack 27.5+ minus the Giant Fathom 29. Full charts: 2021 Giant Fathom 29, 2021 Salsa Timberjack 27.5+.
Where each sits in its class
Giant Fathom 29Salsa Timberjack 27.5+
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 | Giant Fathom 291 | Salsa Timberjack 27.5+ |
|---|---|---|
| Frame | Giant ALUXX SL | not listed |
| Fork | Giant Crest 34 RCL | not listed |
| Shifter | SRAM SX Eagle | not listed |
| Derailleur | SRAM SX Eagle | not listed |
| Cassette | SRAM SX Eagle | not listed |
| Crankset | TruVativ Descendent | not listed |
| Wheelset | Giant AM 29 | not listed |
| Tire | Maxxis Minion DHF, Maxxis Aggressor | not listed |
| Brake | Shimano MT401 | not listed |
| Seatpost | Giant Contact Switch | not listed |
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