2021 Specialized Sirrus X 2.0 Step Through vs 2023 Specialized Sirrus 2.0 Step-Through
The Specialized Sirrus 2.0 Step-Through size closest to your S is the S. Compare the S instead
What changes on the Specialized Sirrus 2.0 Step-Through
Compared with the Specialized Sirrus X 2.0 Step Through in S, the Specialized Sirrus 2.0 Step-Through in M places the top of the head tube 30 mm higher and 8 mm further forward, relative to the bottom bracket.
- Frame stack
- +30 mm
- Higher front end
- Frame reach
- +8 mm
- Longer frame reach
- Wheelbase
- ±0 mm
- About the same
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Sirrus X 2.0 Step Through, SSpecialized Sirrus 2.0 Step-Through, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Sirrus X 2.0 Step Through S | Specialized Sirrus 2.0 Step-Through M | Difference |
|---|---|---|---|
| Reach | 400mm | 408mm | +8 mm |
| Stack | 563mm | 593mm | +30 mm |
| Head tube angle | 70° | 71° | +1.0° |
| Seat tube angle | 73.5° | 73.5° | ±0.0° |
| Chainstay length | 440mm | 440mm | ±0 mm |
| Wheelbase | 1068mm | 1068mm | ±0 mm |
| Standover | 636mm | 636mm | ±0 mm |
| Seat tube length | 450mm | 500mm | +50 mm |
| Fork length | 395mm | 395mm | ±0 mm |
| Head tube length | 147mm | 175mm | +28 mm |
Differences are the Specialized Sirrus 2.0 Step-Through minus the Specialized Sirrus X 2.0 Step Through. Full charts: 2021 Specialized Sirrus X 2.0 Step Through, 2023 Specialized Sirrus 2.0 Step-Through.
Where each sits in its class
Specialized Sirrus X 2.0 Step ThroughSpecialized Sirrus 2.0 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 X 2.0 Step Through | Specialized Sirrus 2.0 Step-Through2.0 Step-Through |
|---|---|---|
| Shifter | not listed | Shimano Acera M315 |
| Derailleur | not listed | Shimano Tourney FD-TY606, Shimano Acera |
| Cassette | not listed | Shimano HG-31 |
| Chain | not listed | KMC X8 |
| Crankset | not listed | Shimano FC-TY501 |
| Tire | not listed | Specialized RoadSport Reflect |
| Brake | not listed | Promax F1 |
| Grips | not listed | Specialized Contour |
| Saddle | not listed | Specialized Bridge Sport |
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