2026 Specialized Sirrus X 1.0 vs 2027 Trek FX Sport SL
The L is the Trek FX Sport SL size closest to your L Specialized Sirrus X 1.0. 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 SL
Compared with the Specialized Sirrus X 1.0 in L, the Trek FX Sport SL in L places the top of the head tube 12 mm higher and about as far forward, relative to the bottom bracket.
- Frame stack
- +12 mm
- Higher front end
- Frame reach
- −2 mm
- About the same reach
- Wheelbase
- −1 mm
- About the same
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- +2 mm
- About the same
The two frames
Only the Specialized Sirrus X 1.0 is drawn. The Trek FX Sport SL numbers we have for size L are missing the seat angle.
Geometry side by side
| Measurement | Specialized Sirrus X 1.0 L | Trek FX Sport SL L | Difference |
|---|---|---|---|
| Reach | 402mm | 400 | −2 mm |
| Stack | 608mm | 620 | +12 mm |
| Head tube angle | 71° | 71.5° | +0.5° |
| Seat tube angle | 73.5° | not listed | |
| Effective top tube | 582mm | 583 | +1 mm |
| Chainstay length | 440mm | 442 | +2 mm |
| Wheelbase | 1076mm | 1075 | −1 mm |
| BB drop | 70mm | 65 | −5 mm |
| BB height | 288mm | 285 | −3 mm |
| Standover | 815mm | 812 | −3 mm |
| Seat tube length | 510mm | 508 | −2 mm |
| Fork length | 395mm | not listed | |
| Head tube length | 191mm | 190 | −1 mm |
Differences are the Trek FX Sport SL minus the Specialized Sirrus X 1.0. Full charts: 2026 Specialized Sirrus X 1.0, 2027 Trek FX Sport SL.
Where each sits in its class
Specialized Sirrus X 1.0Trek FX Sport SL
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 1.01.0 | Trek FX Sport SLSL 4 |
|---|---|---|
| Shifter | Shimano Altus SL-M315-7R | Shimano CUES U6000 |
| Derailleur | Shimano Acera | Shimano CUES U6000 GS |
| Cassette | microSHIFT CS-H074 | Shimano CUES LG300 |
| Chain | KMC X8 | KMC Glide |
| Crankset | Prowheel XXS | Prowheel Alloy |
| Tire | Specialized Pathfinder Wirebead Fast Gravel | Bontrager GR1 Expert |
| Brake | Specialized Lee Chi | Shimano MT201 |
| Grips | Specialized Neutralizer | Bontrager Satellite IsoZone Plus |
| Saddle | Specialized Bridge Sport | Trek Verse |
| Frame | not listed | Trek FX Sport |
| Fork | not listed | Carbon |
| Chainring | not listed | Prowheel narrow-wide |
| Pedals | not listed | Bontrager City |
| Wheelset | not listed | Bontrager Paradigm |
| Hub | not listed | Formula CL-51, Formula CL-52 |
| Rim | not listed | Bontrager Paradigm |
| Rotor | not listed | Shimano SM-RT10 |
| Handlebar | not listed | Bontrager Satellite Plus IsoZone |
| Stem | not listed | Bontrager Elite |
| Headset | not listed | Bontrager Expander Plug |
| Seatpost | not listed | Bontrager alloy |
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