2026 Specialized Sirrus X 1.0 Step-Through vs 2025 Kona Dew
The S is the Kona Dew size closest to your XS Specialized Sirrus X 1.0 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 Kona Dew
Compared with the Specialized Sirrus X 1.0 Step-Through in XS, the Kona Dew in S places the top of the head tube 14 mm higher and 5 mm further forward, relative to the bottom bracket. Its wheelbase is 19 mm longer, which can contribute to stability at speed.
- Frame stack
- +14 mm
- Higher front end
- Frame reach
- +5 mm
- Longer frame reach
- Wheelbase
- +19 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- +10 mm
- Longer: more planted
The two frames
Specialized Sirrus X 1.0 Step-Through, XSKona Dew, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Sirrus X 1.0 Step-Through XS | Kona Dew S | Difference |
|---|---|---|---|
| Reach | 393mm | 398 | +5 mm |
| Stack | 555mm | 569 | +14 mm |
| Head tube angle | 71° | 70.0° | −1.0° |
| Seat tube angle | 73.5° | 75.0° | +1.5° |
| Effective top tube | 557mm | 550 | −7 mm |
| Chainstay length | 440mm | 450 | +10 mm |
| Wheelbase | 1058mm | 1077 | +19 mm |
| BB drop | 70mm | 70 | ±0 mm |
| BB height | 288mm | 272 | −16 mm |
| Standover | 636mm | 687 | +51 mm |
| Seat tube length | 395mm | 420 | +25 mm |
| Fork length | 395mm | 410 | +15 mm |
| Head tube length | 139mm | 135 | −4 mm |
Differences are the Kona Dew minus the Specialized Sirrus X 1.0 Step-Through. Full charts: 2026 Specialized Sirrus X 1.0 Step-Through, 2025 Kona Dew.
Where each sits in its class
Specialized Sirrus X 1.0 Step-ThroughKona Dew
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 1.0 Step-Through1.0 Step-Through | Kona DewDew |
|---|---|---|
| Shifter | Shimano Altus SL-M315-7R | Shimano Altus |
| Derailleur | Shimano Acera | Shimano ESSA U2000 |
| Cassette | microSHIFT CS-H074 | Shimano HG400 |
| Chain | KMC X8 | KMC Z8.3 |
| Crankset | Prowheel XXS | Shimano ESSA |
| Tire | Specialized Pathfinder Wirebead Fast Gravel | WTB Horizon Comp |
| Brake | Specialized Lee Chi | Tektro HD-M275 |
| Grips | Specialized Neutralizer | Kona Key |
| Saddle | Specialized Bridge Sport | Kona Commuter |
| Frame | not listed | Kona 6061 |
| Fork | not listed | Kona Project Two |
| Pedals | not listed | Feimin Platform |
| Rotor | not listed | Tektro TR160 |
| Handlebar | not listed | Kona Riser |
| Stem | not listed | Kona Control |
| Headset | not listed | Feimin FP-H863 |
| Seatpost | not listed | Kona Commuter |
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