The Flow MK4 wheelset lets you do more. 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" tiresDurable 6069 aluminum with welded joint and reinforced spoke bedBST-Asymmetric design combines Stan s legendary easy tubeless inflation with a stronger, more balanced wheel buildM-pulse ultra-low drag hubs with Enduro bearingsMatched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceabilityIncludes tubeless tape and presta valvesItem SpecificationsColorBlackDefined ColorBlackFront Axle15mm Thru x 110mmHub/Brake Compatibility6-Bolt DiscISO Diameter584 / 650b / 27.5"Rim MaterialAlloyRim Width (Internal)30Tire TypeTubeless ReadyValvePrestaWheel Size27.5" Stan's No Tubes Flow MK4 Front Wheel Front Wheel UPC: 847746059707