2021 Specialized Bicycles Stumpjumper Base S1
Build
700C/29 in × 2.3 in
Insights
Somewhat upright stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of Specialized Bicycles Stumpjumper
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 614mm |
| Reach | 410mm |
| Stack to Reach Ratio | 1.5:1 |
| Seat Tube Length, Unknown | 385mm |
| Top Tube Length, Effective/Horizontal Center | 563mm |
| Top Tube Slope | 25.5deg |
| Head Tube Angle | 65deg |
| Seat Tube Angle | 76deg |
| Head Tube Length | 95mm |
| Bottom Bracket Drop | 47mm |
| Bottom Bracket Height | 322.4mm |
| Chainstay Length | 432mm |
| Chainstay Length Horizontal | 429.4mm |
| Front-Center | 724mm |
| Front-Center Horizontal | 722.6mm |
| Wheelbase | 1152mm |
| Fork Offset/Rake | 44mm |
| Fork Length, Unknown | 550mm |
| Trail | 123.7mm very high |
| Mechanical Trail | 112.1mm |
| Wheel Flop | 47.4mm |
| Standover Height | 730mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 189.6mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 157.4mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.3in |
| Tire Outer Diameter | 738.8mm |
| Bike Length with Tires | 1890.8mm |
| Crank Length | 165mm |
| Handlebar Width | 780mm |
| Stem Length | 35mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Rear Travel | 130mm |
| Suspension Sag | Unknown |
| Frame Material | Carbon/Composite |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/s-works-stumpjumper/p/175248?color=281582-175248&searchText=93321-0001