Geometry ?
Surly Steamroller 2026 geometry in sizes 49–62: stack 505–618 mm, reach 388–420 mm, head angle 72.5–74°.
| 49 | 53 | 56 | 59 | 62 | |
|---|---|---|---|---|---|
| Stack | 505 mm | 531 mm | 559 mm | 586 mm | 618 mm |
| Reach | 388 mm | 394 mm | 403 mm | 408 mm | 420 mm |
| Head angle | 72.5° | 73° | 73.5° | 74° | 74° |
| Seat angle | 74.5° | 74° | 73.5° | 73° | 73° |
| Seat tube (c-t) | 515 mm | 555 mm | 585 mm | 615 mm | 645 mm |
| Head tube | 83 mm | 109 mm | 136 mm | 163 mm | 196 mm |
| Top tube (effective) | 528 mm | 546 mm | 568 mm | 588 mm | 609 mm |
| BB drop | 70 mm | 70 mm | 70 mm | 70 mm | 70 mm |
| Chainstay | 398 mm | 398 mm | 398 mm | 398 mm | 398 mm |
| Wheelbase | 957 mm | 967 mm | 979 mm | 988 mm | 1008 mm |
| Fork length | 375 mm | 375 mm | 375 mm | 375 mm | 375 mm |
| Fork offset | 38 mm | 38 mm | 38 mm | 38 mm | 38 mm |
Source: surlybikes.com, checked 13 Nov 2026 · bar position: worked out from published data
Stock build
I don’t have the build for each size yet.
Frames with similar geometry
Stack and reach within 12 mm of size 49 (stack 505 / reach 388 mm).
Stack and reach within 12 mm of size 53 (stack 531 / reach 394 mm).
Stack and reach within 12 mm of size 56 (stack 559 / reach 403 mm).
Stack and reach within 12 mm of size 59 (stack 586 / reach 408 mm).
Stack and reach within 12 mm of size 62 (stack 618 / reach 420 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 7 values for this model’s stem and bars. Add them