2026 Surly · RD
2026 Surly Midnight Special geometry
Full frame geometry for the 2026 Surly Midnight Special, 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) | Seat tube (mm) | Standover (mm) | BB drop (mm) | Chainstay (mm) | Wheelbase (mm) | Fork rake (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 40 | 533 | 360 | 75.2 | 70.7 | 95 | 501 | 400 | 706 | 68 | 425 | 996 | 50 |
| 46 | 539 | 363 | 73.7 | 71.2 | 100 | 521 | 460 | 748 | 68 | 425 | 996 | 50 |
| 50 | 546 | 376 | 73.2 | 71.7 | 110 | 541 | 500 | 779 | 63 | 425 | 1009 | 50 |
| 54 | 562 | 386 | 73.2 | 72.2 | 125 | 556 | 540 | 809 | 63 | 425 | 1019 | 50 |
| 56 | 581 | 392 | 73 | 73 | 140 | 570 | 560 | 830 | 65 | 425 | 1022 | 50 |
| 58 | 600 | 402 | 73 | 73 | 160 | 585 | 580 | 849 | 65 | 425 | 1037 | 50 |
| 60 | 621 | 409 | 72.5 | 73.5 | 180 | 605 | 600 | 868 | 65 | 425 | 1046 | 50 |
| 64 | 642 | 421 | 72.4 | 73.9 | 200 | 625 | 640 | 900 | 65 | 425 | 1060 | 50 |
All measurements in millimetres unless marked (°) for angles.