2015 Specialized Fatboy Expert vs 2013 Salsa Mukluk
The S is the Salsa Mukluk size closest to your S Specialized Fatboy Expert. 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 Mukluk
Compared with the Specialized Fatboy Expert in S, the Salsa Mukluk in S places the top of the head tube at about the same height and 11 mm further forward, relative to the bottom bracket.
- Frame stack
- −3 mm
- About the same height
- Frame reach
- +11 mm
- Longer frame reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
Only the Specialized Fatboy Expert is drawn. The Salsa Mukluk numbers we have for size S are missing the chainstay length.
Geometry side by side
| Measurement | Specialized Fatboy Expert S | Salsa Mukluk S | Difference |
|---|---|---|---|
| Reach | 395mm | 406 | +11 mm |
| Stack | 590mm | 587.4 | −3 mm |
| Head tube angle | 70.5° | 69.5 | −1.0° |
| Seat tube angle | 73° | 73.5 | +0.5° |
| Effective top tube | 576mm | 580 | +4 mm |
| Chainstay length | 455mm | not listed | |
| Wheelbase | 1083mm | 1094.2 – 1114.2 mm | |
| BB drop | 60mm | 60 | ±0 mm |
| BB height | 315mm | not listed | |
| Standover | 757mm | 702.1 | −55 mm |
| Seat tube length | 394mm | 431.8 | +38 mm |
| Head tube length | 110mm | 130 | +20 mm |
| Fork length | not listed | 468 |
Differences are the Salsa Mukluk minus the Specialized Fatboy Expert. Full charts: 2015 Specialized Fatboy Expert, 2013 Salsa Mukluk.
Where each sits in its class
Specialized Fatboy ExpertSalsa Mukluk
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 | Salsa Mukluk |
|---|---|---|
| Shifter | SRAM Grip Shift | not listed |
| Derailleur | SRAM X-7, SRAM X0 | not listed |
| Chain | KMC X10L | not listed |
| Crankset | e*thirteen TRS+ | not listed |
| Pedals | Specialized Bennies | not listed |
| Tire | Specialized Ground Control Fat | not listed |
| Hub | Specialized Hi Lo | not listed |
| Rim | Specialized Fatboy SL | not listed |
| Brake | Shimano Deore M506 | not listed |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app



