2017 Specialized Sirrus Comp City vs 2019 Trek FX Sport
The M is the Trek FX Sport size closest to your M Specialized Sirrus Comp City. 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
Compared with the Specialized Sirrus Comp City in M, the Trek FX Sport in M places the top of the head tube 7 mm lower and 3 mm further back, relative to the bottom bracket.
- Frame stack
- −7 mm
- Lower front end
- Frame reach
- −3 mm
- Shorter frame reach
- Wheelbase
- −1 mm
- About the same
- Head angle
- −0.5°
- Slacker: calmer steering
- Chainstays
- −1 mm
- About the same
The two frames
Only the Specialized Sirrus Comp City is drawn. The Trek FX Sport numbers we have for size M are missing the seat angle.
Geometry side by side
| Measurement | Specialized Sirrus Comp City M | Trek FX Sport M | Difference |
|---|---|---|---|
| Reach | 406mm | 403 | −3 mm |
| Stack | 591mm | 584 | −7 mm |
| Head tube angle | 71.5° | 71.0° | −0.5° |
| Seat tube angle | 73.5° | not listed | |
| Effective top tube | 581mm | 570 | −11 mm |
| Chainstay length | 439mm | 438 | −1 mm |
| Wheelbase | 1068mm | 1067 | −1 mm |
| BB drop | 70mm | 65 | −5 mm |
| BB height | 275mm | 285 | +10 mm |
| Standover | 779.8mm | 743 | −37 mm |
| Seat tube length | 485mm | 457 | −28 mm |
| Fork length | 398mm | not listed | |
| Head tube length | 165mm | 160 | −5 mm |
Differences are the Trek FX Sport minus the Specialized Sirrus Comp City. Full charts: 2017 Specialized Sirrus Comp City, 2019 Trek FX Sport.
Where each sits in its class
Specialized Sirrus Comp CityTrek FX Sport
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 Comp CityComp City | Trek FX Sport4 |
|---|---|---|
| Derailleur | Shimano Tiagra | Shimano Tiagra, Shimano RD-4700 Tiagra |
| Chain | KMC X-10 | KMC X10 |
| Crankset | FSA Gossamer Pro | Shimano R460 |
| Bottom bracket | FSA MegaExo | not listed |
| Wheelset | Specialized AXIS Elite | not listed |
| Tire | Specialized Espoir Sport Reflect | Bontrager AW1 Hard-Case Lite |
| Brake | Shimano Acera | Shimano MT201 |
| Stem | Specialized Flowset | not listed |
| Saddle | Specialized Canopy Comp | Bontrager H1 |
| Frame | not listed | Trek Alpha |
| Fork | not listed | Trek FX |
| Shifter | not listed | Shimano Tiagra |
| Cassette | not listed | Shimano Tiagra |
| Handlebar | not listed | Bontrager Satellite Plus IsoZone |
| Seatpost | not listed | Bontrager SSR |
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