Notubes Flow MK4

With the Flow MK4 wheelset, you can achieve more. Since 2007, there’s a reason why the best riders in the world come to Stans asking for Flows. You can corner harder, ride further, and carry more speed through every section of the trail. The current Flow MK4 gives you the control you need to push your limits.

The patented BST-Asymmetric shape of the Flow MK4 rim ensures the most reliable tubeless seal. The durable 6069 alloy and reinforced spoke bed, combined with the offset drilling of the asymmetric design, create an incredibly durable wheel that inspires more confidence with every ride. Strength and ease of maintenance have long been priorities for every Stan's wheel, and the Flow MK4 takes these priorities further than ever before. The asymmetric rim design allows for the use of a single spoke length for both the front and rear wheels. As with all Stan's wheels, traditional J-bend spokes and lacing are used, known for their strength, ride quality, and ease of maintenance.

Available with Shimano Micro Spline, HG, or SRAM XDR freehub bodies and 6-bolt or Centerlock brake options, with configurations for all common axle setups. Tubeless ready with installed rim tape.

Wide, lightweight, stable, and tubeless - the original Flow redefined what a mountain bike rim could achieve. The current Flow MK4 gives you the confidence to accomplish even more.