Specialized Roubaix 2026 geometry
Size chart for fitting. If this bike already feels right, find others with a similar riding position (size 44). Category: road-endurance.
| Size | Stack | Reach | Head tube angle | Seat tube angle | Chainstay | Wheelbase | BB drop |
|---|---|---|---|---|---|---|---|
| 44 | 531 mm | 355 mm | 70.0° | 75.0° | 415 mm | 986 mm | 80 mm |
| 49 | 551 mm | 363 mm | 71.0° | 74.5° | 415 mm | 993 mm | 80 mm |
| 52 | 571 mm | 368 mm | 71.5° | 74.0° | 415 mm | 999 mm | 80 mm |
| 54 | 591 mm | 373 mm | 72.0° | 73.5° | 415 mm | 1006 mm | 78 mm |
| 56 | 611 mm | 379 mm | 72.5° | 73.0° | 415 mm | 1016 mm | 78 mm |
| 58 | 633 mm | 385 mm | 72.5° | 73.0° | 418 mm | 1029 mm | 76 mm |
| 61 | 656 mm | 390 mm | 73.0° | 72.5° | 418 mm | 1041 mm | 76 mm |
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Size guidance
Stack and reach describe the frame's cockpit envelope better than traditional seat-tube sizing. If you know your preferred stack/reach from a bike that already fits, search within a few millimeters first, then check head angle and chainstay for handling feel. See the glossary for stack, reach, and HTA.