The bike that started it all - the plus-size movement that is. The Krampus Front Sus takes it a step further with the addition of front suspension and a dropper post, providing more traction, more control, more fun. And as you&';d expect, the frame 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 2.6" tires, this bike can get you over just about anything you point it at. 100% Surly Chromoly steel frame; double-butted main triangle and 44mm headtube RockShox 35 Gold RL A2, 120mm travel 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