Fat bikes were out in full force this year at NAHBS. With so many variations, it was hard to take in all at once. Denver’s own 38 Frameworks had quite the impressive carbon fat bike on display called the Hogback. This USA made, aerospace grade carbon frame is built around 170mm rear spacing (like most of the newer fatties these days) and can run 4.7″ tires with no problem. The frame alone weighs only 3.5 pounds too (medium). As always, more photos below.