Specialized Sirrus

2013 UrbanFitness Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 3 × 8 28–48t / 11–32t
Gear range: 499%
Frame: Aluminum
Brakes: Rim brake

Rider height by size (cm)

Size guide

XS 156–166
SM 163–174
MD 171–182
LG 179–189
XL 185–195

Components

12 of 22 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

Specialized A1 Premium Aluminum, fully manipulated butted tubing, integrated lower bearing, fender/rack eyelets Not identified

Suspension

1 part

Fork
- Specialized

Drivetrain

7 parts

Bottom bracket

Cartridge bearing, square spindle w/ crank stop right side, capless bolts Not identified
Cassette
- Shimano
Chain
- KMC X8 8 speeds
X-8
Crankset
- Shimano FC-M131
FC-M131
Front derailleur
- Shimano FD-M191
FD-M191FDM-191
Rear derailleur
- Shimano Altus
Shifters
- Shimano ST-EF51
ST-EF51EF-51

Brakes

2 parts

Brake levers
- Shimano ST-EF51
ST-EF51EF-51
Brakes

Front: Die cast alloy, linear pull, Rear: Die cast alloy, linear pull Not identified

Wheels and tires

5 parts

Front hub

Double sealed, ground race, dual lock nuts w/ 17mm contact side, 5mm QR Not identified
Rear hub

Double-sealed, loose ball, dual-lock nuts Not identified
Rims
- Alex Rims
Spokes

Stainless, 2.0mm (14g) Not identified
Tires
- Specialized

Cockpit and contact points

6 parts

Handlebar
- Specialized
Headset
- FSA
Pedals

Nylon flat pedal Not identified
Saddle

Body Geometry Targa Sport, 155mm Not identified
Seatpost

Alloy, 2-bolt head, 27.2mm Not identified
Stem

Melt-forged alloy, 4-bolt, 20-degreeree rise, 25.4mm clamp Not identified

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Geometry diagram unavailable

The drawing needs reach and stack, which the manufacturer did not publish. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Top tube lengthmm	555	570	580	600	620
Seat tube lengthmm	395	440	485	530	570
Head tube lengthmm	130	150	165	190	225
Head tube angle	70.5°	71°	71.5°	72°	72°
Seat tube angle	73.5°	73.25°	73.5°	73°	73°
Chainstay lengthmm	445	445	445	445	445
Wheelbasemm	1056	1065	1073	1082	1103
Front centermm	621	629	637	647	667
Bottom bracket dropmm	70	70	70	70	70
Standover heightmm	716	750	786	821	859
Fork rakemm	51	51	51	51	51
Trailmm	70	67	63	60	60
Suspension and parts
Crank lengthmm	170	170	175	175	175
Handlebar widthmm	580	580	580	580	580
Stem lengthmm	75	90	90	100	100

Not published by the manufacturer: Reach, Stack, Bottom bracket height, Stack/reach ratio, Front travel, Rear travel, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 28
Largest chainring: 48
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 25.4 in
Highest gear: 126.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 32c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

2 measures

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

Lowest gear

25.4 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2013
Sample: 74 bicycles with this information
Coverage: 96.1% of the class

Highest gear

126.6 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2013
Sample: 74 bicycles with this information
Coverage: 96.1% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.7 km/h
Highest gear: 48.5 km/h

Total gear range 499%

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: 25.4–126.6 gear inches
Class reference (p10–p90): 22.2–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2013
Lowest gear: 74 bicycles with this information, 96.1% of the class
Highest gear: 74 bicycles with this information, 96.1% 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 2013 builds

Differences across 2013 builds
Specification	This bicycle Specialized Sirrus	Specialized Sirrus Comp
Frame
Fork material	Steel	Carbon
Drivetrain
Front chainrings	3	2
Smallest chainring	28	34
Rear sprockets	8	10
Largest sprocket	32	36
Lowest gear	25.4 in	27.4 in
Other specifications
Tire width	32c	28c