Corner harder; send it further; and carry more speed through any section of trail. Today's Flow MK4 gives you the control you need to push boundaries.- Low-profile 30mm internal width optimizes tire shape, traction, and control for 2.3-2.6" tires.- Durable 6069 aluminium 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° engagement.- Enduro bearings with double-row freehub bearing.- Matched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceability.- Connection program includes 5-year hub warranty, 3-year rim warranty, 1-year crash replacement, and £10 donation to trail maintenance or advocacy group of your choice.