2021 Trek Farley AL Frameset vs 2020 Specialized Fatboy Comp Carbon
The XL is the Specialized Fatboy Comp Carbon size closest to your XL Trek Farley AL Frameset. 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 Specialized Fatboy Comp Carbon
Compared with the Trek Farley AL Frameset in XL, the Specialized Fatboy Comp Carbon in XL places the top of the head tube 13 mm higher and 4 mm further forward, relative to the bottom bracket. Its wheelbase is 10 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +13 mm
- Higher front end
- Frame reach
- +4 mm
- Longer frame reach
- Wheelbase
- −10 mm
- Shorter: quicker to change direction
- Head angle
- +1.5°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Trek Farley AL Frameset, XLSpecialized Fatboy Comp Carbon, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Trek Farley AL Frameset XL | Specialized Fatboy Comp Carbon XL | Difference |
|---|---|---|---|
| Reach | 454 | 458mm | +4 mm |
| Stack | 619 | 632mm | +13 mm |
| Head tube angle | 69.0° | 70.5° | +1.5° |
| Seat tube angle | 73.0° | 73° | ±0.0° |
| Effective top tube | 644 | not listed | |
| Chainstay length | 455 | 455mm | ±0 mm |
| Wheelbase | 1171 | 1161mm | −10 mm |
| BB drop | 67 | 60mm | −7 mm |
| BB height | 321 | 312mm | −9 mm |
| Standover | 817 | 807.5mm | −10 mm |
| Seat tube length | 521 | 520mm | −1 mm |
| Head tube length | 120 | 125mm | +5 mm |
| Fork length | not listed | 496mm |
Differences are the Specialized Fatboy Comp Carbon minus the Trek Farley AL Frameset. Full charts: 2021 Trek Farley AL Frameset, 2020 Specialized Fatboy Comp Carbon.
Where each sits in its class
Trek Farley AL FramesetSpecialized Fatboy Comp Carbon
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 | Trek Farley AL FramesetAL Frameset | Specialized Fatboy Comp CarbonComp Carbon |
|---|---|---|
| Frame | Trek Alpha Platinum | Specialized FACT 10m |
| Fork | Bontrager Haru | Specialized FACT carbon monocoque |
| Headset | FSA IS2 | Specialized Integrated |
| Shifter | not listed | SRAM GX Eagle |
| Derailleur | not listed | SRAM GX Eagle |
| Cassette | not listed | SRAM GX Eagle |
| Chain | not listed | SRAM GX Eagle |
| Crankset | not listed | SRAM Stylo Carbon |
| Chainring | not listed | SRAM Stylo |
| Bottom bracket | not listed | SRAM DUB |
| Pedals | not listed | Specialized Dirt |
| Wheelset | not listed | XC 80 |
| Tire | not listed | Maxxis Minion FBF, Maxxis Minion FBR |
| Hub | not listed | Pro 150, Pro 197 |
| Rim | not listed | XC 80 |
| Brake | not listed | SRAM Level TL front, SRAM Level TL rear |
| Rotor | not listed | SRAM Level TL |
| Handlebar | not listed | Riser |
| Stem | not listed | Specialized Trail |
| Grips | not listed | Specialized Sip Grip |
| Seatpost | not listed | Specialized 2-bolt Head |
| Saddle | not listed | Specialized Bridge |
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