2015 Specialized Sirrus Sport Disc vs 2017 Trek FX Sport Women's
We can't match sizes for these two: one of them has no stack and reach for the sizes shown.
What changes on the Trek FX Sport Women's
- Frame stack
- n/a
- One of the bikes has no number for this
- Frame reach
- n/a
- One of the bikes has no number for this
- Wheelbase
- +8 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- ±0 mm
- About the same
The two frames
We can't draw these frames yet. The Specialized Sirrus Sport Disc numbers we have for size XS are missing the reach and stack. The numbers below still compare.
Geometry side by side
| Measurement | Specialized Sirrus Sport Disc XS | Trek FX Sport Women's 19 in | Difference |
|---|---|---|---|
| Head tube angle | 70.5° | 70.5° | ±0.0° |
| Seat tube angle | 73.5° | not listed | |
| Effective top tube | 555mm | 553 | −2 mm |
| Chainstay length | 445mm | 445 | ±0 mm |
| Wheelbase | 1056mm | 1064 | +8 mm |
| BB drop | 70mm | not listed | |
| Standover | 716mm | 767 | +51 mm |
| Seat tube length | 395mm | 483 | +88 mm |
| Head tube length | 130mm | 160 | +30 mm |
| Reach | not listed | not listed | |
| Stack | not listed | not listed | |
| BB height | not listed | 285 |
Differences are the Trek FX Sport Women's minus the Specialized Sirrus Sport Disc. Full charts: 2015 Specialized Sirrus Sport Disc, 2017 Trek FX Sport Women's.
Where each sits in its class
Specialized Sirrus Sport DiscTrek 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 Sport DiscSport Disc | Trek FX Sport Women's4 Women's |
|---|---|---|
| Shifter | Shimano Acera | Shimano Tiagra |
| Derailleur | Shimano Acera | Shimano Tiagra, Shimano Sora R350 |
| Chain | KMC X9 | KMC X10 |
| Pedals | Specialized Sirrus | not listed |
| Tire | Specialized Nimbus | Bontrager AW1 Hard-Case Lite |
| Hub | Specialized Hi Lo | Formula TK-31, Formula TK-32 |
| Brake | Tektro Auriga | not listed |
| Saddle | Specialized Targa Sport | Bontrager H1 WSD |
| Frame | not listed | Trek WSD FX Alpha Gold |
| Fork | not listed | Bontrager Nebula |
| Cassette | not listed | Shimano Tiagra |
| Crankset | not listed | Shimano R460 |
| Wheelset | not listed | Formula TK31 |
| Handlebar | not listed | Bontrager Satellite Plus IsoZone |
| Headset | not listed | VP Slimstak |
| Seatpost | not listed | Bontrager SSR |
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