2021 Salsa Timberjack Single Speed 27.5+ vs 2021 Giant Fathom 29
The S is the Giant Fathom 29 size closest to your XS Salsa Timberjack Single Speed 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 Single Speed 27.5+ in XS, the Giant Fathom 29 in S places the top of the head tube 23 mm higher and 14 mm further forward, relative to the bottom bracket. Its wheelbase is 34 mm longer, which can contribute to stability at speed.
- Frame stack
- +23 mm
- Higher front end
- Frame reach
- +14 mm
- Longer frame reach
- Wheelbase
- +34 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
Salsa Timberjack Single Speed 27.5+, XSGiant Fathom 29, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Salsa Timberjack Single Speed 27.5+ XS | Giant Fathom 29 S | Difference |
|---|---|---|---|
| Reach | 410.7 | 425 | +14 mm |
| Stack | 599 | 622 | +23 mm |
| Head tube angle | 66.4 | 66.0° | −0.4° |
| Seat tube angle | 75.1 | 75.0° | −0.1° |
| Effective top tube | 570 | not listed | |
| Chainstay length | 420-437 | 435 | |
| Wheelbase | 1120 | 1154 | +34 mm |
| BB drop | 56.6 | 60 | +3 mm |
| Standover | 685.5 | 730 | +45 mm |
| Seat tube length | 342.9 | 380 | +37 mm |
| Fork length | 510.5 | not listed | |
| Head tube length | 100 | 95 | −5 mm |
Differences are the Giant Fathom 29 minus the Salsa Timberjack Single Speed 27.5+. Full charts: 2021 Salsa Timberjack Single Speed 27.5+, 2021 Giant Fathom 29.
Where each sits in its class
Salsa Timberjack Single Speed 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 Single Speed 27.5+ | Giant Fathom 291 |
|---|---|---|
| Frame | not listed | Giant ALUXX SL |
| Fork | not listed | Giant Crest 34 RCL |
| Shifter | not listed | SRAM SX Eagle |
| Derailleur | not listed | SRAM SX Eagle |
| Cassette | not listed | SRAM SX Eagle |
| Crankset | not listed | TruVativ Descendent |
| Wheelset | not listed | Giant AM 29 |
| Tire | not listed | Maxxis Minion DHF, Maxxis Aggressor |
| Brake | not listed | Shimano MT401 |
| Seatpost | not listed | Giant Contact Switch |
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