Specialized Sirrus X 1.0 Step-Through

Name: Specialized Sirrus X 1.0 Step-Through
Brand: Specialized

2026 UrbanFitness Manufacturer page

Specialized Sirrus X 1.0 Step-Through, color Satin Grey Blue / Cast Blue Metallic Frost Reflective

Last known price: $699

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 7 42t / 12–40t
Gear range: 333%
Weight: 11.72 kg 25.8 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

XS 151–164
SM 160–172
MD 166–179

Components

7 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 Premium Aluminum, Fitness Geometry, butted tubing, internal cable routing, flat-mount disc, quick-release, Plug + Play rack/fender mounts Not identified

Suspension

1 part

Fork

Hi-Ten steel, flat-mount disc, Plug + Play fender mounts, low rider rack mounts, quick-release Not identified

Drivetrain

6 parts

Bottom bracket

Square-tapered, 68mm Not identified
Cassette
- microSHIFT H-Series 7 Speed Cassette 12-40 7 speeds 12–40t
CS-H074
Chain
- KMC X8 8 speeds
Crankset
- Prowheel 42t
Rear derailleur
- Shimano Acera
Shifters
- Shimano Altus SL-M315-7R 7 speeds
SL-M315-7R

Brakes

1 part

Brakes

Front: Lee Chi, Mechanical Disc, Rear: Lee Chi, Mechanical Disc Not identified

Wheels and tires

5 parts

Front hub

Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h Not identified
Rear hub

Alloy, 6-bolt disc, 8/9-Speed freehub, loose ball bearing, quick-release, 36h, 10x135mm Not identified
Rims

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

Stainless, 14g Not identified
Tires

Front: Pathfinder Wirebead Fast Gravel 700X40C, Rear: Pathfinder Wirebead Fast Gravel 700X40C Not identified

Cockpit and contact points

5 parts

Handlebar
- Specialized
Pedals
- Specialized
Saddle

Bridge Sport, Steel rails, 155/143mm Not identified
Seatpost

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

3D-forged alloy, 31.8mm, 7-degree rise Not identified

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Reach 400mm

Stack 563mm

Wheelbase 1068mm

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 Reported by the manufacturer

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	393	400	408
Stackmm	555	563	593
Top tube lengthmm	557	567	584
Seat tube lengthmm	395	450	500
Head tube lengthmm	139	147	175
Head tube angle	71°	70°	70°
Seat tube angle	73.5°	73.5°	73.5°
Chainstay lengthmm	440	440	440
Wheelbasemm	1058	1068	1077
Front centermm	628	637	646
Bottom bracket dropmm	70	70	70
Bottom bracket heightmm	288	288	288
Standover heightmm	636	636	641
Fork rakemm	51	51	51
Trailmm	76	76	69
Stack/reach ratio	1.41	1.41	1.45
Suspension and parts
Crank lengthmm	165	165	170
Handlebar widthmm	660	660	660
Stem lengthmm	70	70	80
Seatpost lengthmm	300	300	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
Bicycle weight: 11.72 kg

25.8 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 42
Largest chainring: 42
Rear sprockets: 7
Smallest sprocket: 12
Largest sprocket: 40
Lowest gear: 30.5 in
Highest gear: 101.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 40c
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

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

Lowest gear

30.5 gear inches

This value is above the central range for this class.

Cohort: Urban / Fitness Model year: 2026
Sample: 145 bicycles with this information
Coverage: 78.8% of the class

Highest gear

101.5 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2026
Sample: 145 bicycles with this information
Coverage: 78.8% of the class

Shifting

Mechanical

5 of 184 bicycles with this information use electronic shifting.

Cohort: Urban / Fitness Model year: 2026
Sample: 184 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.7 km/h
Highest gear: 38.9 km/h

Total gear range 333%

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: 30.5–101.5 gear inches
Class reference (p10–p90): 22.1–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2026
Lowest gear: 145 bicycles with this information, 78.8% of the class
Highest gear: 145 bicycles with this information, 78.8% 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 2026 builds
Specification	This bicycle Specialized Sirrus X 1.0 Step-Through	Specialized Sirrus X 1.0	Specialized Sirrus X 2.0	Specialized Sirrus X 2.0 EQ	Specialized Sirrus X 2.0 Step-Through	Specialized Sirrus X 3.0
Frame
Fork material	Steel	Steel	Steel	Steel	Steel	Aluminum
Bicycle weight	11.72 kg	11.71 kg	Not informed	Not informed	Not informed	11.07 kg
Drivetrain
Front chainrings	1	1	1	Not informed	1	1
Smallest chainring	42	42	42	Not informed	42	42
Largest chainring	42	42	42	Not informed	42	42
Rear sprockets	7	7	9	9	9	10
Smallest sprocket	12	12	11	11	11	11
Largest sprocket	40	40	46	46	46	48
Lowest gear	30.5 in	30.5 in	26.5 in	Not informed	26.5 in	25.4 in
Highest gear	101.5 in	101.5 in	110.7 in	Not informed	110.7 in	110.7 in
Brakes
Brake type	Mechanical disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Other specifications
Bottom bracket standard	Not informed	Not informed	BSA	Not informed	BSA	BSA

Changes since 2025
Specification	2025 Specialized Sirrus X 1.0 Step-Through	This bicycle Specialized Sirrus X 1.0 Step-Through
Frame
Bicycle weight	11.95 kg	11.72 kg
Drivetrain
Smallest chainring	40	42
Largest chainring	40	42
Lowest gear	29.0 in	30.5 in
Highest gear	96.7 in	101.5 in
Other specifications
Tire width	42c	40c