One of the most versatile choices in Stan's wheel line-up, The Stans Arch S1 27. 5in Boost Wheel transitions from sprawling trail rides in the mountains to demanding desert loops without compromising strength, support, or stability. With wider-set hubs, the Boost wheels deliver added clearance and a stiffer build for more response and stability out on the trails, while the Neo hubs with Durasync provide a responsive 10-degree engagement that helps you get up and over just about any obstacle standing in your way. Thirty-two spokes at the front and rear wheels bring you elevated strength and stiffness for rock-ridden hill climbs and dropping into narrow, treacherous descents. The 26-millimeter internal width offers an ideal tire footprint with trail rubber in the range of 2. 2-2. 5-inches wide--without making them more susceptible to pinch-flats, sidewall slashes, and burps on the trail. And with Stans being a tubeless pioneer and all, the Arch S1's Bead Socket Technology (BST) locks down a secure interface with tubeless set-ups by matching the tire's bead shape. BST makes tires true to their shape in tubeless form, allowing for high levels of traction and less rolling resistance on the trail.