Introducing the 38 Frameworks HOGBACK, the worlds first and only USA-made full carbon fat tire bike. I’ve been riding mountain bikes for over 26 years and I thought I’d seen it all, then I saw the fat tire revolution. I must admit I’ve never ridden one, but the whole concept seems very interesting. Thinking back, the largest tires I’d ridden were 26″ x 2.3″, and that was back almost 20 years ago and they barely fit my Rock Shock Mag 21. During that time, I swore by them. To increase the tire size to 4.7″ sounds absolutely awesome. The folks at 38 Frameworks have stepped up the whole fat tire bike and built the Hogback using aerospace carbon fiber tubing that includes 170 mm rear spacing, and an overall frame weight of 3.5 lbs. With long winter days, riding can be limited, but the HOGBACK allows for 364 days of endless riding with no obstacle too large for the HOGBACK. Size one up here.