Surly Krampus Bike - 29" Steel First Loser Large. The bike that started it all — the plus-size movement that is. 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. Rolling on 29 x 3” tires this bike can get you over just about anything you point it at.

100% Surly Chromoly steel frame and fork; double-butted main triangle and 44mm headtube

The tubeset uses Surly custom trumpet tubes for greater stiffness and durability

Adjustable rear dropouts with 145mm Gnot-Boost spacing. Works with 142 148 12mm thru-axle as well as 135mm with 10/12 washer

Internal dropper seatpost routing

E.D. coated for an added layer of internal frame protection

Clearance for 29 x 3" tires