2026 Specialized Stumpjumper 15 EVO Pro S4
Build
700C/29 in × 2.4 in
Insights
Somewhat upright stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of Specialized Stumpjumper 15 EVO
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 644mm |
| Reach | 470mm |
| Stack to Reach Ratio | 1.37:1 |
| Seat Tube Length, Unknown | 425mm |
| Top Tube Length, Effective/Horizontal Center | 625mm |
| Top Tube Slope | 22deg |
| Head Tube Angle | 64deg |
| Seat Tube Angle | 76deg |
| Head Tube Length | 125mm |
| Bottom Bracket Drop | 35mm |
| Bottom Bracket Height | 337mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 433.6mm |
| Front-Center | 816mm |
| Front-Center Horizontal | 815.4mm |
| Wheelbase | 1249mm |
| Fork Offset/Rake | 44mm |
| Fork Length, Unknown | 573mm |
| Trail | 132.5mm very high |
| Mechanical Trail | 119.1mm |
| Wheel Flop | 52.2mm |
| Standover Height | 745mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 274mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 167mm |
Pro Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 743.9mm |
| Bike Length with Tires | 1992.9mm |
| Crank Length | 170mm |
| Handlebar Width | 810mm |
| Stem Length | 42mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 160mm |
| Rear Travel | 140mm |
| Suspension Sag | Unknown |
| Frame Material | Carbon/Composite |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.specialized.com/us/en/stumpjumper-15-evo-pro-sram-x0-axs-fox-factory/p/4221482?color=5466626-4221482