2019 Specialized Bicycles Stumpjumper ST M
Build
700C/29 in × 2.3 in
Insights
Average stack and reach vs trend of full-suspension trail mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
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Geometry
| Stack | 612mm |
| Reach | 435mm |
| Stack to Reach Ratio | 1.41:1 |
| Seat Tube Length, Unknown | 410mm |
| Top Tube Length, Effective/Horizontal Center | 593mm |
| Top Tube Slope | 21.8deg |
| Head Tube Angle | 67.5deg |
| Seat Tube Angle | 75.5deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 39mm |
| Bottom Bracket Height | 330.4mm |
| Chainstay Length | 437mm |
| Chainstay Length Horizontal | 435.3mm |
| Front-Center | 728mm |
| Front-Center Horizontal | 727.7mm |
| Wheelbase | 1163mm |
| Fork Offset/Rake | 51mm |
| Fork Length, Unknown | 540mm |
| Trail | 97.8mm very high |
| Mechanical Trail | 90.4mm |
| Wheel Flop | 34.6mm |
| Standover Height | 756mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 188.6mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 160.4mm |
ST Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.3in |
| Tire Outer Diameter | 738.8mm |
| Bike Length with Tires | 1901.8mm |
| Crank Length | 170mm |
| Handlebar Width | 780mm |
| Stem Length | 45mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 130mm |
| Rear Travel | Unknown |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://www.specialized.com/us/en/mens-stumpjumper-st-comp-alloy-29/p/159205?color=239758-159205