2019 Specialized Bicycles Stumpjumper ST
- Category
- Full-suspension Trail MTB
- Design
- Flat Bar, Full suspension
- Frame
- Aluminum
- Suspension
- 130mm fork travel
Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Somewhat upright stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
S | M | L | XL | |
Stack | 612mm | 612mm | 635mm | 649mm |
Reach | 415mm | 435mm | 455mm | 480mm |
Stack to Reach Ratio | 1.47:1 | 1.41:1 | 1.4:1 | 1.35:1 |
Seat Tube Length, Unknown | 380mm | 410mm | 455mm | 505mm |
Top Tube Length, Effective/Horizontal Center | 570mm | 593mm | 624mm | 657mm |
Top Tube Slope | 25.6deg | 21.8deg | 18.9deg | 14.8deg |
Head Tube Angle | 67.5deg | 67.5deg | 67.5deg | 67.5deg |
Seat Tube Angle | 75.8deg | 75.5deg | 75.1deg | 74.7deg |
Head Tube Length | 100mm | 100mm | 125mm | 140mm |
Bottom Bracket Drop | 39mm | 39mm | 39mm | 39mm |
Bottom Bracket Height | 330.4mm | 330.4mm | 330.4mm | 330.4mm |
Chainstay Length | 437mm | 437mm | 437mm | 437mm |
Chainstay Length Horizontal | 435.3mm | 435.3mm | 435.3mm | 435.3mm |
Front-Center | 708mm | 728mm | 758mm | 789mm |
Front-Center Horizontal | 707.7mm | 727.7mm | 756.7mm | 787.7mm |
Wheelbase | 1143mm | 1163mm | 1192mm | 1223mm |
Fork Offset/Rake | 51mm | 51mm | 51mm | 51mm |
Fork Length, Unknown | 540mm | 540mm | 540mm | 540mm |
Trail | 97.8mm very high | 97.8mm very high | 97.8mm very high | 97.8mm very high |
Mechanical Trail | 90.4mm | 90.4mm | 90.4mm | 90.4mm |
Wheel Flop | 34.6mm | 34.6mm | 34.6mm | 34.6mm |
Standover Height | 750mm | 756mm | 769mm | 770mm |
Tire to Pedal Spindle | 168.6mm 170 mm cranks | 188.6mm 170 mm cranks | 218.6mm 170 mm cranks | 249.6mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 160.4mm 170 mm cranks | 160.4mm 170 mm cranks | 160.4mm 170 mm cranks | 160.4mm 170 mm cranks |
ST Build
S | M | L | XL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.3in | 2.3in | 2.3in | 2.3in |
Tire Outer Diameter | 738.8mm | 738.8mm | 738.8mm | 738.8mm |
Bike Length with Tires | 1881.8mm | 1901.8mm | 1930.8mm | 1961.8mm |
Crank Length | 170mm | 170mm | 170mm | 170mm |
Handlebar Width | 780mm | 780mm | 780mm | 780mm |
Stem Length | 45mm | 45mm | 45mm | 45mm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Full-suspension Trail MTBSource:https://www.specialized.com/us/en/mens-stumpjumper-st-comp-alloy-29/p/159205?color=239758-159205