Surly Krampus Frameset – 29″ Steel First Loser X-Large. The Krampus is the bike that started it all — the plus-size movement that is. For 2017 the Krampus features Surly’s Gnot-Boost rear hub spacing of 145mm; compatible with Boost 148 x 12mm thru-axle 142 x 12mm thru-axle and 135mm quick-release hubs.
100% Surly 4130 CroMoly steel frame and fork; double-butted main triangle and 44mm headtube
New tube-set uses the same trumpet tubes found on 2017 Karate Monkey frame
