Specialized Sirrus

Name: Specialized Sirrus
Brand: Specialized

2017 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

9 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

Specialized A1 Premium Aluminum, Fitness Geometry, fully-manipulated butted tubing, integrated lower bearing, fender/rack mounts Not identified

Suspension

1 part

Fork

Steel, straight blades, fender/rack mounts Not identified

Drivetrain

7 parts

Bottom bracket

BSA, square taper, cartridge bearings Not identified
Cassette
- Shimano 11–32t
Chain
- KMC X8 8 speeds
Crankset

Stout, forged alloy, 48/38/28T w/chainguard Not identified
Front derailleur
- Shimano Tourney
Rear derailleur
- Shimano Altus RD-M310
RD-M310
Shifters
- Shimano ST-EF500
ST-EF500

Brakes

1 part

Brakes

Front: V-brake, linear pull, Rear: V-brake, linear pull Not identified

Wheels and tires

5 parts

Front hub
- Specialized
Rear hub
- Specialized
Rims

700c, 6061 aluminum double-wall Not identified
Spokes

Stainless, 14g Not identified
Tires

Front: Nimbus Reflect, 700x32mm, 26TPI, Flak Jacket protection, Rear: Nimbus Reflect, 700x32mm, 26TPI, Flak Jacket protection Not identified

Cockpit and contact points

5 parts

Handlebar
- Specialized
Pedals
- Specialized
Saddle

Canopy Sport, steel rails Not identified
Seatpost

Alloy, 12mm offset, 2-bolt clamp, 27.2mm Not identified
Stem

Alloy, 4-bolt, 20-degree 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

Reach 402mm

Stack 600mm

Wheelbase 1073mm

Head angle 71.5°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	388	394	402	409	418
Stackmm	563	584	600	626	659
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°	73.3°	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
Bottom bracket heightmm	281	281	281	281	281
Standover heightmm	716	750	786	821	859
Fork rakemm	51	51	51	51	51
Trailmm	70	67	64	60	60
Stack/reach ratio	1.45	1.48	1.49	1.53	1.58
Suspension and parts
Crank lengthmm	170	170	170	170	175
Handlebar widthmm	580	580	600	600	620
Stem lengthmm	80	80	80	100	100
Seatpost lengthmm	300	300	350	350	350

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: 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

Bottom bracket standard: BSA
Tire width: 32c
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
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: 2017
Sample: 159 bicycles with this information
Coverage: 86.8% of the class

Highest gear

126.6 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2017
Sample: 159 bicycles with this information
Coverage: 86.8% 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: 2017
Lowest gear: 159 bicycles with this information, 86.8% of the class
Highest gear: 159 bicycles with this information, 86.8% 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 Sirrus	Specialized Sirrus Comp Carbon	Specialized Sirrus Comp City	Specialized Sirrus Disc	Specialized Sirrus Elite	Specialized Sirrus Expert Carbon
Frame
Frame material	Aluminum	Carbon	Aluminum	Aluminum	Aluminum	Carbon
Fork material	Steel	Carbon	Carbon	Steel	Carbon	Carbon
Drivetrain
Front chainrings	3	2	2	3	2	2
Smallest chainring	28	32	32	28	32	32
Rear sprockets	8	10	10	8	9	11
Largest sprocket	32	34	34	32	34	32
Lowest gear	25.4 in	27.3 in	27.3 in	25.4 in	27.3 in	29.0 in
Brakes
Brake type	Rim brake	Hydraulic disc	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc
Other specifications
Bottom bracket standard	BSA	Not informed	Not informed	BSA	Not informed	BB86/BB92
Tire width	32c	30c	30c	32c	30c	30c

Changes since 2016
Specification	2016 Specialized Sirrus	This bicycle Specialized Sirrus
Other specifications
Travel	Configuration: RigidFront: Additional specification: Not available: Yes	Configuration: RigidFront: Additional specification: Not available: YesRear: Additional specification: Not available: Yes
Bottom bracket standard	Not informed	BSA