Beargrease is Salsa's fat-tire bike built to roll with the control and composure of a modern trail MTB. A long, stable wheelbase and balanced weight distribution make it easy to find traction and navigate loose, steep terrain -- the 27.5 x 4.5" tires don't hurt, either. Rack, Three-Pack, and accessory mounts offer ample space for your race-day or out-all-day kit. Whether you want to tackle winter ultra events, hit hot laps on snowy singletrack, or just wander without worrying about the terrain, Beargrease is your bike. Key Features - UDH-ready carbon fiber frame that's stiff for maximum pedaling efficiency while keeping weight to a minimum. It also helps reduce trail vibrations for a smoother ride. - Modern trail bike geometry grants stability and control in steep terrain and soft conditions. - 27.5 x 4.5" tires provide enormous traction and float for sticking to your line in steep, soft, and loose terrain. Their size also helps them roll over rocks, roots, and other trail obstacles for a smoother ride. - Redesigned Bearpaw Carbon fork gives you ample cargo space, with two sets of Three-Pack mounts and mini-pannier compatibility. Beargrease also supports suspension forks up to 100mm travel. - Internally routed dropper post for more control in challenging terrain and when mounting and dismounting in deep snow. - The main triangle fits three bottles on SM-XL frames (two on XS frames), and is rear rack compatible with the Salsa Rack-Lock Seatpost Clamp (sold separately). Direct-mount frame bag mounts in the main triangle (carbon frames only) make for an extra-secure, streamlined frame bag setup. - Top tube mounts for bags or K-Edge computer mounts, plus a mount under the downtube for a repair kit, stove fuel, or other accessories. - Downtube fender mount (carbon frames only) helps keep debris at bay.