2019 Specialized Fatboy vs 2021 Trek Farley C Frameset
The XL is the Trek Farley C Frameset size closest to your XL Specialized Fatboy. 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 Trek Farley C Frameset
Compared with the Specialized Fatboy in XL, the Trek Farley C Frameset in XL places the top of the head tube 13 mm lower and 4 mm further back, relative to the bottom bracket. Its wheelbase is 10 mm longer, which can contribute to stability at speed.
- Frame stack
- −13 mm
- Lower front end
- Frame reach
- −4 mm
- Shorter frame reach
- Wheelbase
- +10 mm
- Longer: steadier at speed
- Head angle
- −2.0°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Fatboy, XLTrek Farley C Frameset, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Fatboy XL | Trek Farley C Frameset XL | Difference |
|---|---|---|---|
| Reach | 458mm | 454 | −4 mm |
| Stack | 632mm | 619 | −13 mm |
| Head tube angle | 71° | 69.0° | −2.0° |
| Seat tube angle | 73mm | 73.0° | ±0.0° |
| Effective top tube | 651mm | 644 | −7 mm |
| Chainstay length | 455mm | 455 | ±0 mm |
| Wheelbase | 1161mm | 1171 | +10 mm |
| BB drop | 60mm | 67 | +7 mm |
| BB height | 316mm | 321 | +5 mm |
| Standover | 847mm | 774 | −73 mm |
| Seat tube length | 520mm | 521 | +1 mm |
| Fork length | 496mm | not listed | |
| Head tube length | 125mm | 120 | −5 mm |
Differences are the Trek Farley C Frameset minus the Specialized Fatboy. Full charts: 2019 Specialized Fatboy, 2021 Trek Farley C Frameset.
Where each sits in its class
Specialized FatboyTrek Farley C Frameset
Each bike is ranked against the other fat 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 | Specialized FatboyFatboy | Trek Farley C FramesetFarley C Frameset |
|---|---|---|
| Shifter | SRAM NX | not listed |
| Derailleur | SRAM NX | not listed |
| Cassette | SRAM PG-1130 | not listed |
| Chain | KMC X11 EPT | not listed |
| Tire | Specialized Ground Control Fat | not listed |
| Hub | Specialized Stout Pro 150, Specialized Stout Pro 197 | not listed |
| Rim | Specialized Stout XC 80 | not listed |
| Brake | SRAM Level T | not listed |
| Handlebar | Specialized Stout | not listed |
| Grips | Specialized Sip Grip | not listed |
| Saddle | Specialized Henge Comp | not listed |
| Frame | not listed | Trek OCLV |
| Fork | not listed | Trek Farley |
| Headset | not listed | FSA IS2 |
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