Durable, stiff and smooth, Salsa's Mukluk 3 Rear Hub builds up a mean fat bike rear wheel (fat bikes sport super-wide hubs, rims and tires). The Mukluk 3 features 170mm spacing and a strong forged shell and steel axle. It spins on two sealed cartridge bearings, accepts a 6-bolt disc-brake rotor and comes with Salsa's sweet Flip-Off quick release.