2023 Specialized Sirrus 2.0 Step-Through vs 2025 Specialized Sirrus X 1.0 Step-Through
The S is the Specialized Sirrus X 1.0 Step-Through size closest to your S Specialized Sirrus 2.0 Step-Through. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Specialized Sirrus X 1.0 Step-Through
Compared with the Specialized Sirrus 2.0 Step-Through in S, the Specialized Sirrus X 1.0 Step-Through in S places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket. Its wheelbase is 10 mm longer, which can contribute to stability at speed.
- Frame stack
- ±0 mm
- About the same height
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- +10 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Sirrus 2.0 Step-Through, SSpecialized Sirrus X 1.0 Step-Through, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Sirrus 2.0 Step-Through S | Specialized Sirrus X 1.0 Step-Through S | Difference |
|---|---|---|---|
| Reach | 400mm | 400 | ±0 mm |
| Stack | 563mm | 563 | ±0 mm |
| Head tube angle | 70° | 70 | ±0.0° |
| Seat tube angle | 73.5° | 73.5 | ±0.0° |
| Chainstay length | 440mm | 440 | ±0 mm |
| Wheelbase | 1058mm | 1068 | +10 mm |
| Standover | 641mm | 636 | −5 mm |
| Seat tube length | 450mm | 450 | ±0 mm |
| Fork length | 395mm | 395 | ±0 mm |
| Head tube length | 147mm | 147 | ±0 mm |
| Effective top tube | not listed | 567 | |
| BB drop | not listed | 70 | |
| BB height | not listed | 288 |
Differences are the Specialized Sirrus X 1.0 Step-Through minus the Specialized Sirrus 2.0 Step-Through. Full charts: 2023 Specialized Sirrus 2.0 Step-Through, 2025 Specialized Sirrus X 1.0 Step-Through.
Where each sits in its class
Specialized Sirrus 2.0 Step-ThroughSpecialized Sirrus X 1.0 Step-Through
Each bike is ranked against the other commuter bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized Sirrus 2.0 Step-Through2.0 Step-Through | Specialized Sirrus X 1.0 Step-Through1.0 Step-Through |
|---|---|---|
| Shifter | Shimano Acera M315 | Shimano Altus SL-M315-7R |
| Derailleur | Shimano Tourney FD-TY606, Shimano Acera | Shimano Acera M3020 |
| Cassette | Shimano HG-31 | microSHIFT CS-H074 |
| Chain | KMC X8 | KMC X8 |
| Crankset | Shimano FC-TY501 | PROWHEEL |
| Tire | Specialized RoadSport Reflect | Specialized Pathfinder Sport |
| Brake | Promax F1 | Tektro MD-U310R |
| Grips | Specialized Contour | Specialized Neutralizer |
| Saddle | Specialized Bridge Sport | Specialized Bridge Sport |
| Frame | not listed | Specialized Sirrus X |
| Fork | not listed | Specialized Sirrus X Steel Disc |
| Chainring | not listed | Prowheel single |
| Bottom bracket | not listed | Specialized Square-tapered |
| Pedals | not listed | Specialized Body Geometry Fitness |
| Wheelset | not listed | Specialized 700C |
| Handlebar | not listed | Specialized Alloy |
| Stem | not listed | Specialized Alloy |
| Bar tape | not listed | Specialized Neutralizer |
| Headset | not listed | Specialized Headset |
| Seatpost | not listed | Specialized Alloy |
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