Specialized Sirrus Expert Carbon

Name: Specialized Sirrus Expert Carbon
Brand: Specialized

2017 UrbanFitness Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 11 32–48t / 11–32t
Gear range: 436%
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

13 of 17 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 FACT 9r carbon, Fitness Geometry, Zertz, internal cable routing, tapered/integrated headset, post disc mount, Plug + Play fender mount Not identified

Suspension

1 part

Fork
- Specialized

Drivetrain

7 parts

Bottom bracket
- FSA PF30/BB386 BB ROAD
Cassette
- Shimano 105 CS-R7000 11 speeds 11–32t
CS-R7000
Chain
- KMC X11 11 speeds
Crankset
- FSA Gossamer 48/32t
Front derailleur
- Shimano 105
Rear derailleur
- Shimano 105
Shifters
- microSHIFT

Brakes

1 part

Brakes
- Shimano Deore

Wheels and tires

2 parts

Rims

Front: Axis Expert Deep, Rear: Axis Expert Deep Not identified
Tires

Front: Espoir Sport Reflect, 700x30mm, 60TPI, double BlackBelt protection, Rear: Espoir Sport Reflect, 700x30mm, 60TPI, double BlackBelt protection Not identified

Cockpit and contact points

5 parts

Handlebar
- Specialized
Pedals

Aluminum platform, aluminum cage, sealed bearings, reflectors Not identified
Saddle
- Ritchey Comp
Seatpost
- Specialized
Stem
- Specialized

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 403mm

Stack 591mm

Wheelbase 1060mm

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 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	395	403	410	420
Stackmm	574	591	616	650
Top tube lengthmm	568	578	598	619
Seat tube lengthmm	440	485	530	570
Head tube lengthmm	150	165	190	225
Head tube angle	71°	71.5°	72°	72°
Seat tube angle	73.3°	73.5°	73°	73°
Chainstay lengthmm	435	435	435	435
Wheelbasemm	1052	1060	1070	1091
Front centermm	627	635	645	666
Bottom bracket dropmm	70	70	70	70
Bottom bracket heightmm	275	275	275	275
Standover heightmm	752.2	784.6	821.9	860.3
Fork rakemm	51	51	51	51
Trailmm	65	62	58	58
Stack/reach ratio	1.45	1.47	1.50	1.55
Suspension and parts
Crank lengthmm	170	172.5	172.5	175
Handlebar widthmm	580	600	600	620
Stem lengthmm	90	90	105	105
Seatpost lengthmm	300	300	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: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 32
Largest chainring: 48
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 32
Lowest gear: 29.0 in
Highest gear: 126.6 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: BB86/BB92
Tire width: 30c
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

29.0 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: 11.1 km/h
Highest gear: 48.5 km/h

Total gear range 436%

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: 29.0–126.6 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 Expert Carbon	Specialized Sirrus	Specialized Sirrus Comp Carbon	Specialized Sirrus Comp City	Specialized Sirrus Disc	Specialized Sirrus Elite
Frame
Frame material	Carbon	Aluminum	Carbon	Aluminum	Aluminum	Aluminum
Fork material	Carbon	Steel	Carbon	Carbon	Steel	Carbon
Drivetrain
Front chainrings	2	3	2	2	3	2
Smallest chainring	32	28	32	32	28	32
Rear sprockets	11	8	10	10	8	9
Largest sprocket	32	32	34	34	32	34
Lowest gear	29.0 in	25.4 in	27.3 in	27.3 in	25.4 in	27.3 in
Brakes
Brake type	Hydraulic disc	Rim brake	Hydraulic disc	Hydraulic disc	Mechanical disc	Hydraulic disc
Other specifications
Bottom bracket standard	BB86/BB92	BSA	Not informed	Not informed	BSA	Not informed
Tire width	30c	32c	30c	30c	32c	30c

Changes since 2016
Specification	2016 Specialized Sirrus Expert Carbon	This bicycle Specialized Sirrus Expert Carbon
Other specifications
Bottom bracket standard	BSA	BB86/BB92
Travel	Configuration: Rigid	Configuration: RigidFront: Additional specification: Not available: YesRear: Additional specification: Not available: Yes