Specialized S-Works Stumpjumper

2011 MountainCross-country Manufacturer page

Fork travel: 20 mm
Wheels: 26″
Drivetrain: 2 × 10 26–39t / 11–36t
Gear range: 491%
Frame: Carbon
Brakes: Hydraulic disc

Sizes

Size guide

15.5"
17.5"
19"
21"

The manufacturer did not publish rider heights for these sizes.

Components

20 of 23 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

FACT 11m carbon, FACT IS construction, tapered HT, carbon PF-30 BB, DMD, hollow carbon dropouts, replaceable alloy derailleur hanger Not identified

PF-30

Suspension

1 part

Fork
- Specialized

Drivetrain

7 parts

Bottom bracket
- S-Works
PF-30
Cassette
- SRAM XX 11–36t
Chain
- SRAM PowerLock Chain Connector 10-Speed 10 speeds
PC-1090
Crankset
- S-Works
Front derailleur
- SRAM XX
Rear derailleur
- SRAM XX
Shifters
- SRAM XX

Brakes

2 parts

Wheels and tires

5 parts

Cockpit and contact points

7 parts

Grips
- Specialized
Handlebar
- S-Works
Headset

1-1/8 and 1.5"" Threadless, Campy style upper with 1.5"" lower, cartridge bearings Not identified
Pedals

Resin Test Ride Pedals with toe clips, CEN std. Not identified
Saddle
- Specialized
Seatpost
- S-Works
Stem
- Syntace

Sizes and geometry

4 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 17.5"

Table

Reach 407mm

Stack 580mm

Wheelbase 1068mm

Head angle 70.5°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 26″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	378	407	436	450
Stackmm	556	580	603	625
Top tube lengthmm	555	585	615	640
Seat tube lengthmm	394	445	483	533
Head tube lengthmm	120	130	145	165
Head tube angle	70.5°	70.5°	70.5°	70.5°
Seat tube angle	73°	73°	73°	73°
Chainstay lengthmm	424	424	424	424
Wheelbasemm	1064	1068	1109	1129
Front centermm	643	647	688	708
Bottom bracket dropmm	39	39	39	39
Bottom bracket heightmm	304	304	304	304
Standover heightmm	770	800	830	870
Fork rakemm	76	45	48	46
Trailmm	41	74	71	73
Stack/reach ratio	1.47	1.43	1.38	1.39
Suspension and parts
Crank lengthmm	170	175	175	175
Handlebar widthmm	660	660	660	660
Stem lengthmm	75	90	105	105
Seatpost lengthmm	350	350	400	400

Not published by the manufacturer: Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Hardtail
Front travel: 20 mm

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 26
Largest chainring: 39
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 36
Lowest gear: 18.8 in
Highest gear: 92.2 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: PF30
Fork spring: Air
Tire width: 2″
Wheel material: Carbon
Wheel size: 26″

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

20 mm

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2011
Sample: 179 bicycles with this information
Coverage: 72.1% of the class

Lowest gear

18.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2011
Sample: 228 bicycles with this information
Coverage: 91.9% of the class

Highest gear

92.2 gear inches

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2011
Sample: 228 bicycles with this information
Coverage: 91.9% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.2 km/h
Highest gear: 35.3 km/h

Total gear range 491%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 18.8–92.2 gear inches
Class reference (p10–p90): 16.8–116.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2011
Lowest gear: 228 bicycles with this information, 91.9% of the class
Highest gear: 228 bicycles with this information, 91.9% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2011 builds

Differences across 2011 builds
Specification	This bicycle Specialized S-Works Stumpjumper	Specialized Stumpjumper 29er Singlespeed	Specialized Stumpjumper Comp	Specialized Stumpjumper Comp 29er	Specialized Stumpjumper Comp Carbon 29er	Specialized Stumpjumper Expert Carbon 29er
Frame
Frame material	Carbon	Aluminum	Aluminum	Aluminum	Carbon	Carbon
Fork material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Suspension
Front travel	20 mm	80 mm	90 mm	80 mm	80 mm	90 mm
Drivetrain
Front chainrings	2	1	3	3	2	Not informed
Smallest chainring	26	32	22	22	24	Not informed
Largest chainring	39	32	44	44	38	Not informed
Smallest sprocket	11	20	11	11	11	11
Largest sprocket	36	20	36	36	36	36
Lowest gear	18.8 in	46.4 in	15.9 in	17.7 in	19.3 in	Not informed
Highest gear	92.2 in	46.4 in	104.0 in	116.0 in	100.2 in	Not informed
Other specifications
Bottom bracket standard	PF30	EBB	Not informed	Not informed	PF30	PF30
Fork spring	Air	Air	Not informed	Not informed	Not informed	Air
Tire width	2″	2″	2″	1.95″	1.95″	1.95″
Wheel material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Wheel size	26″	29″	26″	29″	29″	29″