Surly Frame
2 models, 2 verified variants. Only rows checked against Surly’s own page are listed.
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec. A cell marked not stated is a field the maker does not publish, so nothing here checks it.
| Model | Variants | Wheel configs | Maximum fork travel | Rear axle | Bottom bracket | Head tube upper | Head tube lower | Seat tube | Maximum rear rotor | Price (MSRP) |
|---|---|---|---|---|---|---|---|---|---|---|
| Surly Karate Monkey | 1 | Frame takes 29" and 27.5" wheels | Approved for a fork up to 140 mm of travel | Boost 148x12 | Bottom-bracket shell BSA threaded 73 | Upper head-tube bore ZS44/28.6 (S.H.I.S.) | Lower head-tube bore EC44/30 (S.H.I.S.) | Seatpost diameter 30.9 mm | Rear rotor up to 203 mm (maker-stated maximum) | $999.00 |
| Surly Krampus | 1 | Frame takes 29" wheels | Approved for a fork up to 120 mm of travel | Boost 148x12 | Bottom-bracket shell BSA threaded 73 | Upper head-tube bore ZS44/28.6 (S.H.I.S.) | Lower head-tube bore EC44/30 (S.H.I.S.) | Seatpost diameter 30.9 mm | Rear rotor up to 203 mm (maker-stated maximum) | $1,099.00 |
Source for every row: Surly’s own product pages, last checked on 2026-07-30.
The checker compares the dimensions listed in what we check, and what we don’t. “No conflicts found” means no conflict among those dimensions — not a guarantee that a build works. Errors mean it won’t fit; warnings mean it works but check; infos are notes.