2018 Surly · A
2018 Surly Pack Rat geometry
Full frame geometry for the 2018 Surly Pack Rat, size by size — stack, reach, angles and tube lengths.
Does this bike fit you?
Get sized in minutes — no tape measure, no appointment.
Geometry by size
| Size | Stack (mm) | Reach (mm) | Seat angle (°) | Head angle (°) | Head tube (mm) | Top tube (mm) | Seat tube (mm) | Standover (mm) | BB drop (mm) | Front centre (mm) | Chainstay (mm) | Wheelbase (mm) | Fork rake (mm) | Trail (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 38 | 455 | 377 | 75.5 | 72.5 | 90 | 495 | 380 | 685 | 45 | 559 | 410 | 960 | 44 | 58 |
| 42 | 471 | 379 | 75.5 | 72.5 | 105 | 505 | 420 | 711 | 45 | 566 | 410 | 963 | 44 | 58 |
| 46 | 484 | 386 | 75.5 | 72.5 | 120 | 520 | 460 | 736 | 45 | 577 | 410 | 965 | 44 | 58 |
| 50 | 498 | 392 | 75.5 | 72.5 | 135 | 535 | 500 | 762 | 45 | 588 | 410 | 975 | 44 | 58 |
| 52 | 518 | 397 | 73.5 | 74 | 130 | 550 | 520 | 791 | 55 | 584 | 415 | 986 | 44 | 52 |
| 54 | 532 | 402 | 73 | 74 | 145 | 565 | 540 | 807 | 55 | 593 | 415 | 996 | 44 | 52 |
| 56 | 547 | 408 | 72.5 | 74 | 160 | 580 | 560 | 823 | 55 | 604 | 415 | 1006 | 44 | 52 |
| 58 | 561 | 418 | 72 | 74 | 175 | 595 | 580 | 840 | 55 | 618 | 415 | 1015 | 44 | 52 |
All measurements in millimetres unless marked (°) for angles.