The Arch MK4 wheelset is an ideal choice for All-mountain Downcountry and Trailduro- a versatile aluminum wheelset available for riders who want to push the limits on every trail. Up down and wherever the ride takes you the Arch MK4 wheelset has it under control. 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 and share a single spoke length for easy serviceability Includes tubeless tape and presta valves TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Rear Axle 12mm Thru x 148mm Rim Width (Internal) 28 Cassette Body Type SRAM XDR (XD Compatible) Valve Presta Color Black Wheel Size 29" Defined Color Black ISO Diameter 622 / Road / 29" Tire Type Tubeless Ready Rim Material Alloy Hub/Brake Compatibility 6-Bolt Disc Axle Size 12 X 148Mm