Specialized S-Works Stumpjumper FSR 650b

Name: Specialized S-Works Stumpjumper FSR 650b
Brand: Specialized

2017 MountainEnduro Manufacturer page

Travel: 150 / 150 mm Fork / rear shock
Wheels: 27.5″
Drivetrain: 1 × 12 32t / 10–50t
Gear range: 500%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
LG 178–189
XL 186–199

Components

16 of 21 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, full carbon chassis and rear end, Trail Geometry, SWAT™ Door integration, PF30 BB, fully enclosed internal cable routing, ManFu link, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 150mm of travel Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

1 part

Brakes
- SRAM Guide RS

Wheels and tires

5 parts

Front hub
- Roval
Rear hub
- Roval
Rims
- Roval
Spokes
- DT Swiss REVOLUTION
Tires

Front: Butcher, GRID casing, 650x2.3"", 60TPI, Aramid folding bead, 2Bliss Ready, Rear: Slaughter, GRID casing, 650x2.3"", 60TPI, Aramid folding bead, 2Bliss Ready Not identified

Cockpit and contact points

6 parts

Grips
- Specialized
Handlebar
- Specialized
Pedals

Resin Test Ride w/toe clips Not identified
Saddle

Body Geometry Henge Expert, hollow titanium rails, 143mm Not identified
Seatpost

Command Post IRcc, 12 position micro-height adjustable, alien head design, bottom mount cable routing, remote SRL lever, 30.9mm, S: 100mm, M/L/XL: 125mm travel Not identified
Stem
- Syntace

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 414mm

Stack 599mm

Wheelbase 1126mm

Head angle 67.0°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	388	414	442	464
Stackmm	590	599	608	617
Top tube lengthmm	558	587	618	646
Seat tube lengthmm	396	430	468	523
Head tube lengthmm	95	105	115	125
Head tube angle	67°	67°	67°	67°
Seat tube angle	74°	74°	74°	74°
Chainstay lengthmm	420	420	420	420
Wheelbasemm	1096	1126	1158	1184
Front centermm	677	706	738	764
Bottom bracket dropmm	18	18	18	18
Bottom bracket heightmm	335	335	335	335
Standover heightmm	742	748	762	764
Fork rakemm	46	46	46	46
Trailmm	104	104	104	104
Stack/reach ratio	1.52	1.45	1.38	1.33
Suspension and parts
Crank lengthmm	170	175	175	175
Handlebar widthmm	750	750	750	750
Stem lengthmm	50	60	60	60
Seatpost lengthmm	390	430	430	430

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

Suspension

Suspension configuration: Full suspension
Front travel: 150 mm
Rear travel: 150 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 50
Lowest gear: 17.6 in
Highest gear: 88.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: PF30
Fork spring: Air
Tire width: 2.3″
Wheel material: Carbon
Wheel size: 27.5″

Technical analysis

3 measures

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

Front travel

150 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2017
Sample: 145 bicycles with this information
Coverage: 92.9% of the class

Lowest gear

17.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2017
Sample: 143 bicycles with this information
Coverage: 91.6% of the class

Highest gear

88.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2017
Sample: 143 bicycles with this information
Coverage: 91.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.7 km/h
Highest gear: 33.7 km/h

Total gear range 500%

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: 17.6–88.0 gear inches
Class reference (p10–p90): 16.5–90.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Enduro Model year: 2017
Lowest gear: 143 bicycles with this information, 91.6% of the class
Highest gear: 143 bicycles with this information, 91.6% 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 2017 builds
Specification	This bicycle Specialized S-Works Stumpjumper FSR 650b	Specialized Stumpjumper FSR Comp 29	Specialized Stumpjumper FSR Comp 650b	Specialized Stumpjumper FSR Comp Carbon 29	Specialized Stumpjumper FSR Comp Carbon 650b	Specialized Stumpjumper FSR Expert Carbon 29
Frame
Frame material	Carbon	Aluminum	Aluminum	Carbon	Carbon	Carbon
Suspension
Rear travel	150 mm	Not informed	150 mm	Not informed	150 mm	Not informed
Drivetrain
Smallest chainring	32	28	30	28	30	28
Largest chainring	32	28	30	28	30	28
Rear sprockets	12	11	11	11	11	11
Largest sprocket	50	42	42	42	42	42
Lowest gear	17.6 in	19.3 in	19.6 in	19.3 in	19.6 in	19.3 in
Highest gear	88.0 in	81.2 in	82.5 in	81.2 in	82.5 in	81.2 in
Other specifications
Wheel material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Wheel size	27.5″	29″	27.5″	29″	27.5″	29″