Surly Krampus Front SuspensionThe 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 Surlys 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