2015 Specialized Fatboy Expert vs 2015 Trek Farley
The Trek Farley size closest to your M is the M. Compare the M instead
What changes on the Trek Farley
Compared with the Specialized Fatboy Expert in M, the Trek Farley in XS places the top of the head tube 5 mm lower and 48 mm further back, relative to the bottom bracket. Its wheelbase is 54 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- −48 mm
- Shorter frame reach
- Wheelbase
- −54 mm
- Shorter: quicker to change direction
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −15 mm
- Shorter: livelier
The two frames
Only the Specialized Fatboy Expert is drawn. The Trek Farley numbers we have for size XS are missing the seat angle.
Geometry side by side
| Measurement | Specialized Fatboy Expert M | Trek Farley XS | Difference |
|---|---|---|---|
| Reach | 420mm | 372 | −48 mm |
| Stack | 600mm | 595 | −5 mm |
| Head tube angle | 70.5° | 70.0° | −0.5° |
| Seat tube angle | 73° | not listed | |
| Effective top tube | 603mm | 554 | −49 mm |
| Chainstay length | 455mm | 440 | −15 mm |
| Wheelbase | 1105mm | 1051 | −54 mm |
| BB drop | 60mm | 55 | −5 mm |
| BB height | 315mm | 313 | −2 mm |
| Standover | 793mm | 757 | −36 mm |
| Seat tube length | 445mm | 343 | −102 mm |
| Head tube length | 120mm | 100 | −20 mm |
Differences are the Trek Farley minus the Specialized Fatboy Expert. Full charts: 2015 Specialized Fatboy Expert, 2015 Trek Farley.
Where each sits in its class
Specialized Fatboy ExpertTrek Farley
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 Fatboy ExpertExpert | Trek Farley6 |
|---|---|---|
| Shifter | SRAM Grip Shift | Shimano Deore |
| Derailleur | SRAM X-7, SRAM X0 | SRAM X-5, Shimano Deore XT |
| Chain | KMC X10L | KMC X10 |
| Crankset | e*thirteen TRS+ | not listed |
| Pedals | Specialized Bennies | not listed |
| Tire | Specialized Ground Control Fat | Bontrager Hodag |
| Hub | Specialized Hi Lo | not listed |
| Rim | Specialized Fatboy SL | Sun Ringlé Mulefüt |
| Brake | Shimano Deore M506 | Avid DB 1 |
| Frame | not listed | Trek Alpha Platinum |
| Cassette | not listed | Shimano HG50 |
| Headset | not listed | FSA IS2 |
| Saddle | not listed | Bontrager Evoke 2 |
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