Specialized Stumpjumper 29er Singlespeed

2011 MountainCross-country Manufacturer page

Fork travel: 80 mm
Wheels: 29″
Drivetrain: 1 × 10 32t / 20t
Gear range: 100%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

15.5"
17.5"
19"
21"
23"

The manufacturer did not publish rider heights for these sizes.

Components

14 of 20 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

M5 manipulated alloy frame, 29"" geometry, curved TT, ECBB-light eccentric bottom bracket, disc only, vertical dropouts Not identified

Suspension

1 part

Fork
- Fox

Drivetrain

4 parts

Bottom bracket

EBB, press-fit Not identified
Cassette

Single speed specific, wide-based, heat-treated Cr-Mo, 20t Not identified
Chain
- KMC X10 10 speeds
Crankset
- SRAM 32t
S-1250

Brakes

2 parts

Wheels and tires

5 parts

Cockpit and contact points

7 parts

Grips
- Specialized
Handlebar
- Specialized
Headset

1-1/8"" upper and lower campy style cartridge bearings for integrated alloy HT Not identified
Pedals

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

2014 butted alloy, single bolt setback, 30.9mm, 15.5/17.5"": 350mm, others: 400mm Not identified
Stem
- Specialized

Sizes and geometry

5 sizes Open in the geometry plotter

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

Size 19"

Table

Reach 429mm

Stack 637mm

Wheelbase 1093mm

Head angle 71.5°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	403	407	429	451	465
Stackmm	607	627	637	646	665
Top tube lengthmm	570	590	615	640	660
Seat tube lengthmm	396	448	486	536	587
Head tube lengthmm	100	110	120	130	150
Head tube angle	71.5°	71.5°	71.5°	71.5°	71.5°
Seat tube angle	74.5°	73.5°	73.5°	73.5°	73.5°
Chainstay lengthmm	430	430	430	430	430
Wheelbasemm	1064	1067	1093	1118	1138
Front centermm	644	647	673	698	718
Bottom bracket dropmm	73	73	73	73	73
Bottom bracket heightmm	301	301	301	301	301
Standover heightmm	724	799	829	863	900
Fork rakemm	56	48	49	49	49
Trailmm	66	75	74	74	74
Stack/reach ratio	1.51	1.54	1.49	1.43	1.43
Suspension and parts
Crank lengthmm	175	180	180	180	180
Handlebar widthmm	680	680	680	680	680
Stem lengthmm	75	90	105	105	105
Seatpost lengthmm	350	350	400	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: Aluminum
Fork material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 80 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 10
Smallest sprocket: 20
Largest sprocket: 20
Lowest gear: 46.4 in
Highest gear: 46.4 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: EBB
Fork spring: Air
Tire width: 2″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

3 measures

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

Front travel

80 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

46.4 gear inches

This value is above 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

46.4 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: 17.8 km/h
Highest gear: 17.8 km/h

Total gear range 100%

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: 46.4–46.4 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 Stumpjumper 29er Singlespeed	Specialized Stumpjumper Comp	Specialized Stumpjumper Comp 29er	Specialized Stumpjumper Comp Carbon 29er	Specialized Stumpjumper Expert Carbon 29er	Specialized Stumpjumper FSR Comp
Frame
Frame material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Aluminum
Suspension
Suspension configuration	Hardtail	Hardtail	Hardtail	Hardtail	Hardtail	Full suspension
Front travel	80 mm	90 mm	80 mm	80 mm	90 mm	140 mm
Rear travel	Not informed	Not informed	Not informed	Not informed	Not informed	140 mm
Drivetrain
Front chainrings	1	3	3	2	Not informed	3
Smallest chainring	32	22	22	24	Not informed	22
Largest chainring	32	44	44	38	Not informed	44
Smallest sprocket	20	11	11	11	11	11
Largest sprocket	20	36	36	36	36	36
Lowest gear	46.4 in	15.9 in	17.7 in	19.3 in	Not informed	15.9 in
Highest gear	46.4 in	104.0 in	116.0 in	100.2 in	Not informed	104.0 in
Other specifications
Bottom bracket standard	EBB	Not informed	Not informed	PF30	PF30	Not informed
Fork spring	Air	Not informed	Not informed	Not informed	Air	Air
Suspension	Hardtail	Hardtail	Hardtail	Hardtail	Hardtail	Full suspension
Tire width	2″	2″	1.95″	1.95″	1.95″	2.2″
Wheel size	29″	26″	29″	29″	29″	26″