2017 Jamis · U
2017 Jamis Allegro geometry
Full frame geometry for the 2017 Jamis Allegro, size by size — stack, reach, angles and tube lengths.
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Geometry by size
| Size | Stack (mm) | Reach (mm) | Seat angle (°) | Head angle (°) | Head tube (mm) | Top tube (mm) | Standover (mm) | BB drop (mm) | Chainstay (mm) | Wheelbase (mm) | Fork rake (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 15 | 545 | 387 | 74 | 71 | 135 | 545 | 733 | 55 | 435 | 1040 | 50 |
| 17 | 559 | 398 | 74 | 71 | 150 | 560 | 760 | 55 | 435 | 1056 | 50 |
| 19 | 586 | 395 | 73.5 | 72 | 175 | 570 | 799 | 55 | 435 | 1052 | 50 |
| 21 | 610 | 403 | 73.5 | 72 | 200 | 585 | 837 | 55 | 435 | 1068 | 50 |
| 23 | 639 | 405 | 73.5 | 72 | 230 | 595 | 870 | 55 | 435 | 1078 | 50 |
All measurements in millimetres unless marked (°) for angles.