The Arch MK4 wheelset is a must-have for All-mountain, Downcountry, and Trailduro enthusiasts who crave versatility and durability on every trail. Whether you’re climbing up, descending down, or exploring new paths, the Arch MK4 wheelset will keep you in control. Features: Versatile 28mm internal rim width optimized for 2.2-2.5” tires Light and durable 6069 aluminum with welded joint and reinforced spoke bed BST-Asymmetric design combines Stan’s legendary easy tubeless inflation with a stronger, more balanced wheel build M-pulse ultra-low drag magnetic pawl adjustable hubs with 1.66 deg engagement Enduro bearings with double-row freehub bearing Matched wheelsets use traditional J-bend lacing…