Arch S2 wheelsets have the versatility to handle a wide range of riding conditions and are the ideal upgrade for Trail, AM, Enduro, and eBikes. When your average ride includes both tough climbs and rough descents and you want the best tubeless system in the business, the Arch S2 is for you. Versatile 28mm internal rim width optimized for 2.2-2.5" tires 6061 aluminum with sleeved joint and stainless steel rim eyelets Patented BST low-profile rim shape for easy tubeless inflation and the most reliable seal Matched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceability E-sync hubs feature Enduro bearings with double-row freehub bearing and cromoly axle offer 47% increase in max torque capacity over Neo hubs Connection program includes 3-year E-sync hub warranty, 3-year S2 rim warranty, 1-year crash replacement, and $10 donation to trail maintenance or advocacy group of your choice Tubeless tape installed, requires additional valve stems Specifications ColorBlackDefined ColorBlackDesigned for ebikeYesFront Axle15mm Thru x 110mmHub/Brake Compatibility6-Bolt DiscISO Diameter584 / 650b / 27.5"ValvePrestaWheel Size27.5"