What do you get when you take an already awesome trail bike like a Specialized Stumpjumper FSR and add 3″ wide 27.5 tires? You get the Stumpy FSR Comp 6fattie, a plus-tire trail shredder. Plus tires increase stability, traction, and comfort on the trail – add a frame with Boost hub spacing and you get a wider wheel axle as well, giving you a stiffer wheelset. Corner at speed? Absolutely. Create your own line? You bet. Go around the rocks or go through ’em – your choice with this one.