2022 Specialized Sirrus 2.0 Step-Through vs 2020 Trek FX Sport Women's
The S is the Trek FX Sport Women's size closest to your XS 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 Trek FX Sport Women's
Compared with the Specialized Sirrus 2.0 Step-Through in XS, the Trek FX Sport Women's in S places the top of the head tube 3 mm higher and about as far forward, relative to the bottom bracket.
- Frame stack
- +3 mm
- Higher front end
- Frame reach
- +2 mm
- About the same reach
- Wheelbase
- −2 mm
- About the same
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- −2 mm
- About the same
The two frames
Only the Specialized Sirrus 2.0 Step-Through is drawn. The Trek FX Sport Women's numbers we have for size S are missing the seat angle.
Geometry side by side
| Measurement | Specialized Sirrus 2.0 Step-Through XS | Trek FX Sport Women's S | Difference |
|---|---|---|---|
| Reach | 393mm | 395 | +2 mm |
| Stack | 555mm | 558 | +3 mm |
| Head tube angle | 70° | 70.5° | +0.5° |
| Seat tube angle | 73.5° | not listed | |
| Chainstay length | 440mm | 438 | −2 mm |
| Wheelbase | 1058mm | 1056 | −2 mm |
| Standover | 620mm | 712 | +92 mm |
| Seat tube length | 395mm | 406 | +11 mm |
| Fork length | 395mm | not listed | |
| Head tube length | 139mm | 135 | −4 mm |
| Effective top tube | not listed | 550 | |
| BB drop | not listed | 65 | |
| BB height | not listed | 285 |
Differences are the Trek FX Sport Women's minus the Specialized Sirrus 2.0 Step-Through. Full charts: 2022 Specialized Sirrus 2.0 Step-Through, 2020 Trek FX Sport Women's.
Where each sits in its class
Specialized Sirrus 2.0 Step-ThroughTrek FX Sport Women's
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 | Trek FX Sport Women's4 Women's |
|---|---|---|
| Shifter | Shimano Acera | Shimano Tiagra 4700 |
| Derailleur | microSHIFT RD-M26S, Shimano Tourney FD-TY710 | Shimano Tiagra 4700 |
| Cassette | Shimano Altus | Shimano Tiagra HG-500 |
| Chain | KMC X8 | KMC X10 |
| Crankset | Shimano Tourney | Shimano R460 |
| Tire | Specialized RoadSport Reflect | Bontrager R1 Hard-Case Lite |
| Brake | Promax F1 | Shimano MT201 |
| Saddle | Specialized Bridge Sport | Bontrager H1 |
| Frame | not listed | Trek Alpha |
| Fork | not listed | Trek FX |
| Pedals | not listed | Wellgo M141 |
| Handlebar | not listed | Bontrager Satellite Plus IsoZone |
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