The Flow MK4 wheelset lets you do more. Since 2007, there s a reason the best riders in the world have come to us to ask for Flows. 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 optimises tyre shape, traction, and control for 2.3-2.6 tyresDurable 6069 aluminium with welded joint and reinforced spoke bedBST-Asymmetric design combines Stan s legendary easy tubeless inflation with a stronger, more balanced wheel buildNew high-end premium hubMatched wheelsets use traditional J-bend lacing and share a single spoke length for easy serviceabilityConnection 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 choiceThe Flow MK4 rim s patented BST-Asymmetric shape creates the most reliable tubeless seal. The rim s durable 6069 alloy construction and reinforced spoke