2017 Trek FX Sport Women's vs 2019 Specialized Sirrus Women's V-Brake
The S is the Specialized Sirrus Women's V-Brake size closest to your 50 Trek FX Sport Women's. 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 Women's V-Brake
Compared with the Trek FX Sport Women's in 50, the Specialized Sirrus Women's V-Brake in S places the top of the head tube 9 mm higher and 5 mm further forward, relative to the bottom bracket. Its wheelbase is 42 mm longer, which can contribute to stability at speed.
- Frame stack
- +9 mm
- Higher front end
- Frame reach
- +5 mm
- Longer frame reach
- Wheelbase
- +42 mm
- Longer: steadier at speed
- Head angle
- −1.1°
- Slacker: calmer steering
- Chainstays
- +20 mm
- Longer: more planted
The two frames
We can't draw these frames yet. The Trek FX Sport Women's numbers we have for size 50 are missing the seat angle. The numbers below still compare.
Geometry side by side
| Measurement | Trek FX Sport Women's 50 | Specialized Sirrus Women's V-Brake S | Difference |
|---|---|---|---|
| Reach | 368 | 373mm | +5 mm |
| Stack | 546 | 555mm | +9 mm |
| Head tube angle | 71.1° | 70° | −1.1° |
| Effective top tube | 519 | 537mm | +18 mm |
| Chainstay length | 420 | 440mm | +20 mm |
| Wheelbase | 996 | 1038mm | +42 mm |
| BB drop | 80 | 70mm | −10 mm |
| BB height | not listed | 275mm | |
| Standover | 716 | 715mm | −1 mm |
| Seat tube length | 450 | 395mm | −55 mm |
| Head tube length | 130 | 124mm | −6 mm |
| Seat tube angle | not listed | 73.5° | |
| Fork length | not listed | 410mm |
Differences are the Specialized Sirrus Women's V-Brake minus the Trek FX Sport Women's. Full charts: 2017 Trek FX Sport Women's, 2019 Specialized Sirrus Women's V-Brake.
Where each sits in its class
Trek FX Sport Women'sSpecialized Sirrus Women's V-Brake
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 | Trek FX Sport Women's4 Women's | Specialized Sirrus Women's V-BrakeWomen's V-Brake |
|---|---|---|
| Frame | Trek WSD FX Alpha Gold | not listed |
| Fork | Bontrager Nebula | not listed |
| Shifter | Shimano Tiagra | Shimano EF500 |
| Derailleur | Shimano Tiagra, Shimano Sora R350 | Shimano Tourney, Shimano Tourney TX |
| Cassette | Shimano Tiagra | Shimano HG200 |
| Chain | KMC X10 | KMC X8 |
| Crankset | Shimano R460 | Shimano Tourney |
| Wheelset | Formula TK31 | not listed |
| Tire | Bontrager AW1 Hard-Case Lite | Specialized Nimbus 2 |
| Hub | Formula TK-31, Formula TK-32 | not listed |
| Handlebar | Bontrager Satellite Plus IsoZone | not listed |
| Headset | VP Slimstak | not listed |
| Seatpost | Bontrager SSR | not listed |
| Saddle | Bontrager H1 WSD | Specialized Aldia Sport |
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