2021 Specialized Bicycles Stumpjumper Base
- Category
- Full-suspension Trail MTB
- Design
- Flat Bar, Full suspension
- Frame
- Carbon/Composite
- Suspension
- 140mm fork travel, 130mm rear travel
- Features
- Disc brake
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 | Average 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 | Average 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 |
Geometry
S1 | S2 | S3 | S4 | S5 | S6 | |
Stack | 614mm | 613mm | 622mm | 632mm | 641mm | 650mm |
Reach | 410mm | 430mm | 450mm | 475mm | 500mm | 530mm |
Stack to Reach Ratio | 1.5:1 | 1.43:1 | 1.38:1 | 1.33:1 | 1.28:1 | 1.23:1 |
Seat Tube Length, Unknown | 385mm | 385mm | 405mm | 425mm | 445mm | 465mm |
Top Tube Length, Effective/Horizontal Center | 563mm | 583mm | 605mm | 632mm | 660mm | 692mm |
Top Tube Slope | 25.5deg | 24.6deg | 22.7deg | 20.8deg | 19deg | 17.2deg |
Head Tube Angle | 65deg | 65deg | 65deg | 65deg | 65deg | 65deg |
Seat Tube Angle | 76deg | 76deg | 76deg | 76deg | 76deg | 76deg |
Head Tube Length | 95mm | 100mm | 110mm | 120mm | 130mm | 140mm |
Bottom Bracket Drop | 47mm | 42mm | 42mm | 42mm | 42mm | 42mm |
Bottom Bracket Height | 322.4mm | 327.4mm | 327.4mm | 327.4mm | 327.4mm | 327.4mm |
Chainstay Length | 432mm | 432mm | 432mm | 432mm | 442mm | 442mm |
Chainstay Length Horizontal | 429.4mm | 430mm | 430mm | 430mm | 440mm | 440mm |
Front-Center | 724mm | 746mm | 770mm | 800mm | 829mm | 863mm |
Front-Center Horizontal | 722.6mm | 745.1mm | 770.1mm | 798.1mm | 828mm | 862mm |
Wheelbase | 1152mm | 1175mm | 1200mm | 1228mm | 1268mm | 1302mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | 44mm | 44mm | 44mm |
Fork Length, Unknown | 550mm | 550mm | 550mm | 550mm | 550mm | 550mm |
Trail | 123.7mm very high | 123.7mm very high | 123.7mm very high | 123.7mm very high | 123.7mm very high | 123.7mm very high |
Mechanical Trail | 112.1mm | 112.1mm | 112.1mm | 112.1mm | 112.1mm | 112.1mm |
Wheel Flop | 47.4mm | 47.4mm | 47.4mm | 47.4mm | 47.4mm | 47.4mm |
Standover Height | 730mm | 734mm | 744mm | 749mm | 757mm | 757mm |
Tire to Pedal Spindle | 189.6mm 165 mm cranks | 206.6mm 170 mm cranks | 230.6mm 170 mm cranks | 260.6mm 170 mm cranks | 289.6mm 170 mm cranks | 318.6mm 175 mm cranks |
Pedal Spindle to Ground Clearance | 157.4mm 165 mm cranks | 157.4mm 170 mm cranks | 157.4mm 170 mm cranks | 157.4mm 170 mm cranks | 157.4mm 170 mm cranks | 152.4mm 175 mm cranks |
Base Build
S1 | S2 | S3 | S4 | S5 | S6 | |
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 | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.3in | 2.3in | 2.3in | 2.3in | 2.3in | 2.3in |
Tire Outer Diameter | 738.8mm | 738.8mm | 738.8mm | 738.8mm | 738.8mm | 738.8mm |
Bike Length with Tires | 1890.8mm | 1913.8mm | 1938.8mm | 1966.8mm | 2006.8mm | 2040.8mm |
Crank Length | 165mm | 170mm | 170mm | 170mm | 170mm | 175mm |
Handlebar Width | 780mm | 780mm | 780mm | 780mm | 780mm | 780mm |
Stem Length | 35mm | 35mm | 50mm | 50mm | 50mm | 50mm |
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/s-works-stumpjumper/p/175248?color=281582-175248&searchText=93321-0001