2018 Specialized Bicycles Fatboy Base XL
Build
26 in × 4.6 in
Insights
Average stack and reach vs trend of hardtail fatbike bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 632mm |
| Reach | 458mm |
| Stack to Reach Ratio | 1.38:1 |
| Seat Tube Length, Unknown | 520mm |
| Top Tube Length, Effective/Horizontal Center | 651mm |
| Top Tube Slope | 12.5deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 125mm |
| Bottom Bracket Drop | 60mm |
| Bottom Bracket Height | 336.3mm |
| Chainstay Length | 455mm |
| Chainstay Length Horizontal | 451mm |
| Front-Center | 713mm |
| Front-Center Horizontal | 710mm |
| Wheelbase | 1161mm |
| Fork Offset/Rake | 47mm |
| Fork Length, Unknown | 496mm |
| Trail | 86.8mm very high |
| Mechanical Trail | 82mm |
| Wheel Flop | 26.7mm |
| Standover Height | 847mm |
| Tire to Pedal Spindle Distance With 175 mm cranks | 141.7mm |
| Pedal Spindle to Ground Clearance With 175 mm cranks | 161.3mm |
Base Build
| Wheel Size | 26 inch (559mm BSD) |
| Tire Width | 4.6in |
| Tire Outer Diameter | 792.7mm |
| Bike Length with Tires | 1953.7mm |
| Crank Length | 175mm |
| Handlebar Width | 750mm |
| Stem Length | 70mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Aluminum |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/fatboy/p/154356?color=236237-154356