The Stans Arch S1 27. 5in Wheel is one of the most versatile choices in Stan's wheel line-up, effortlessly transitioning from fast-flowing XC loops to rugged desert mesas without sacrificing overall strength or tire support. It's similar to the Arch MK3 Wheel, but at a more affordable price that only compromises in terms of rolling weight over its pricier MK3 sibling. The Arch S1 retains the excellent Neo hubs with Durasync, which provide a responsive 10-degree engagement for getting up and over trail impediments standing in your way. Thirty-two spokes at the front and rear wheels maximize strength and stiffness when you're tracking over rough terrain and plunging into steep, rocky descents. The 26-millimeter internal width maintains an ideal tire footprint with trail rubber in the range of 2. 2 to 2. 5-inches wide--without deforming your tires into a bulbous or bell-like shape that's prone to pinch-flats, sidewall slashes, and burps on the trail. Seeing Stans is a tubeless pioneer, the Arch S1's Bead Socket Technology (BST) maintains 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.