Specialized Sirrus X 2.0 Step-Through

Name: Specialized Sirrus X 2.0 Step-Through
Brand: Specialized

2025 UrbanFitness Manufacturer page

Specialized Sirrus X 2.0 Step-Through, color Stn Refl Spc Dporg

Last known price: $899

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 8 40t / 12–42t
Gear range: 350%
Weight: 12.08 kg 26.6 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 151–164
SM 160–172
MD 166–179

Components

6 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

BSA, square-taper, 68mm Not identified
Cassette
- microSHIFT Acolyte 12–42t
CS-H084
Chain
- KMC X8 8 speeds
Crankset

Alloy Forged Arms, 40T Not identified
Rear derailleur
- microSHIFT Acolyte
Shifters
- microSHIFT Acolyte Quick Trigger Shifter 1×8 Indicator 8 speeds
SL-M6280

Brakes

1 part

Brakes
- ProMax

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, 32h 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, 700x42, Rear: Pathfinder Sport, 700x42 Not identified

Cockpit and contact points

5 parts

Handlebar

Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm Not identified
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	70°	70°	71°
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	680	680	680
Stem lengthmm	60	70	80
Seatpost lengthmm	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: Aluminum
Fork material: Steel
Bicycle weight: 12.08 kg

26.6 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 40
Largest chainring: 40
Rear sprockets: 8
Smallest sprocket: 12
Largest sprocket: 42
Lowest gear: 27.6 in
Highest gear: 96.7 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: 42c
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

27.6 gear inches

This value is within the central range for this class.

Cohort: Urban / Fitness Model year: 2025
Sample: 227 bicycles with this information
Coverage: 81.6% of the class

Highest gear

96.7 gear inches

This value is below the central range for this class.

Cohort: Urban / Fitness Model year: 2025
Sample: 227 bicycles with this information
Coverage: 81.6% of the class

Shifting

Mechanical

13 of 278 bicycles with this information use electronic shifting.

Cohort: Urban / Fitness Model year: 2025
Sample: 278 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.6 km/h
Highest gear: 37.0 km/h

Total gear range 350%

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: 27.6–96.7 gear inches
Class reference (p10–p90): 21.8–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2025
Lowest gear: 227 bicycles with this information, 81.6% of the class
Highest gear: 227 bicycles with this information, 81.6% 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 2025 builds
Specification	This bicycle Specialized Sirrus X 2.0 Step-Through	Specialized Sirrus X 1.0	Specialized Sirrus X 1.0 Step-Through	Specialized Sirrus X 2.0	Specialized Sirrus X 2.0 EQ	Specialized Sirrus X 2.0 Step-Through EQ
Frame
Bicycle weight	12.08 kg	11.58 kg	11.95 kg	12.08 kg	13.66 kg	13.71 kg
Drivetrain
Front chainrings	1	1	1	1	1	Not informed
Smallest chainring	40	40	40	40	42	Not informed
Largest chainring	40	40	40	40	42	Not informed
Rear sprockets	8	7	7	8	9	9
Smallest sprocket	12	12	12	12	11	11
Largest sprocket	42	40	40	42	41	41
Lowest gear	27.6 in	29.0 in	29.0 in	27.6 in	29.7 in	Not informed
Highest gear	96.7 in	96.7 in	96.7 in	96.7 in	110.7 in	Not informed
Brakes
Brake type	Hydraulic disc	Mechanical disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Other specifications
Bottom bracket standard	BSA	Not informed	Not informed	BSA	Not informed	Not informed
Tire width	42c	42c	42c	42c	38c	38c

Changes since 2024
Specification	2024 Specialized Sirrus X 2.0 Step-Through	This bicycle Specialized Sirrus X 2.0 Step-Through
Drivetrain
Front chainrings	Not informed	1
Smallest chainring	Not informed	40
Largest chainring	Not informed	40
Lowest gear	Not informed	27.6 in
Highest gear	Not informed	96.7 in
Brakes
Brake type	Mechanical disc	Hydraulic disc