Specialized Sirrus X 4.0

Name: Specialized Sirrus X 4.0
Brand: Specialized

2021 UrbanFitness Manufacturer page

Specialized Sirrus X 4.0, color Gloss Sky Blue / Tarmac Black / Satin Black Reflective

Last known price: $1,500

Prices shown first for United States
Fork travel: 20 mm
Wheels: 700c
Drivetrain: 1 × 11 40t / 11–42t
Gear range: 382%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

9 of 19 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 SL Premium Aluminum, Fitness Geometry, fully manipulated butted tubing, internal cable routing, flat-mount disc, 12x142mm thru-axle, Plug + Play rack/fender mounts Not identified

Suspension

1 part

Fork

Carbon Monocoque, 12x100mm flat thru-axle, flat mount disc, Future Shock 1.5 Not identified

Drivetrain

6 parts

Bottom bracket

Threaded BSA 68mm, 24mm spindle Not identified
Cassette
- Shimano Deore CS-M5100-11 11 speeds 11–42t
CS-M5100-11
Chain
- KMC X11 11 speeds
Crankset

Forged aluminum arms, 2-piece, 24mm spindle, Narrow-wide Aluminum chainring, 40T Not identified
Rear derailleur
- Shimano Deore RD-M5100-SGS 11 speeds
RD-M5100-SGS
Shifters
- Shimano Deore SL-M5100
SL-M5100

Brakes

1 part

Brakes
- Shimano BR-MT200
BR-MT200

Wheels and tires

5 parts

Front hub

Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x100mm spacing, 24H Not identified
Rear hub

Alloy, Center Lock disc, high-low flange, sealed cartridge bearings, 12x142mm spacing, 28H Not identified
Rims

700C disc, double-wall alloy, 22mm depth, 21mm internal width, 32h Not identified
Spokes

Stainless, 14g Not identified
Tires

Front: Pathfinder Sport, 700x38mm, Rear: Pathfinder Sport, 700x38mm Not identified

Cockpit and contact points

5 parts

Handlebar
- Specialized
Pedals
- Specialized
Saddle
- Ritchey Comp
Seatpost

Alloy, 2-bolt, 14mm offset, 27.2mm Not identified
Stem
- Ritchey Comp

Sizes and geometry

6 sizes Open in the geometry plotter

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

Size SM

Table

Reach 376mm

Stack 606mm

Wheelbase 1060mm

Head angle 70.0°

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 Reach Stack

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	355	371	376	382	386	398
Stackmm	587	590	606	635	651	672
Top tube lengthmm	529	549	559	573	581	599
Seat tube lengthmm	360	395	440	470	510	530
Head tube lengthmm	111	125	143	169	186	208
Head tube angle	69.5°	70°	70°	71°	71°	71°
Seat tube angle	73.5°	73.5°	73.5°	73.5°	73.5°	73.5°
Chainstay lengthmm	440	440	440	440	440	440
Wheelbasemm	1033	1049	1060	1065	1074	1093
Front centermm	602	618	629	634	644	663
Bottom bracket dropmm	70	70	70	70	70	70
Bottom bracket heightmm	284	284	284	284	284	284
Standover heightmm	700	722	750	778	810	831
Fork rakemm	51	51	51	51	51	51
Trailmm	78	75	75	68	68	68
Stack/reach ratio	1.65	1.59	1.61	1.66	1.69	1.69
Suspension and parts
Crank lengthmm	165	165	170	170	175	175
Handlebar widthmm	660	660	660	680	680	680
Stem lengthmm	60	60	70	80	90	100
Seatpost lengthmm	300	300	350	350	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: Carbon

Suspension

Suspension configuration: Hardtail
Front travel: 20 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 27.6 in
Highest gear: 105.5 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: BSA
Tire width: 38c
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

27.6 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2021
Sample: 245 bicycles with this information
Coverage: 92.1% of the class

Highest gear

105.5 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2021
Sample: 245 bicycles with this information
Coverage: 92.1% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.6 km/h
Highest gear: 40.4 km/h

Total gear range 382%

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: 27.6–105.5 gear inches
Class reference (p10–p90): 20.6–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2021
Lowest gear: 245 bicycles with this information, 92.1% of the class
Highest gear: 245 bicycles with this information, 92.1% 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 2021 builds
Specification	This bicycle Specialized Sirrus X 4.0	Specialized Sirrus X 2.0	Specialized Sirrus X 2.0 Step Through	Specialized Sirrus X 3.0	Specialized Sirrus X 5.0
Frame
Frame material	Aluminum	Aluminum	Aluminum	Aluminum	Carbon
Fork material	Carbon	Steel	Steel	Aluminum	Carbon
Suspension
Suspension configuration	Hardtail	Rigid	Rigid	Rigid	Hardtail
Front travel	20 mm	Not informed	Not informed	Not informed	20 mm
Drivetrain
Rear sprockets	11	8	Not informed	10	12
Smallest sprocket	11	12	Not informed	11	11
Largest sprocket	42	42	Not informed	42	51
Lowest gear	27.6 in	27.6 in	Not informed	27.6 in	22.8 in
Highest gear	105.5 in	96.7 in	Not informed	105.5 in	105.5 in
Other specifications
Suspension	Hardtail	Rigid	Rigid	Rigid	Hardtail
Tire width	38c	42c	42c	42c	38c

Changes since 2020
Specification	2020 Specialized Sirrus X 4.0	This bicycle Specialized Sirrus X 4.0
Drivetrain
Front chainrings	3	1
Smallest chainring	22	40
Largest chainring	44	40
Rear sprockets	10	11
Smallest sprocket	Not informed	11
Largest sprocket	Not informed	42
Lowest gear	Not informed	27.6 in
Highest gear	Not informed	105.5 in
Other specifications
Bottom bracket standard	Not informed	BSA