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Stans No Tubes ZTR Flow EX MTB Rim

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sku: 111258

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Stans No Tubes ZTR Flow EX MTB Rim

With multiple World Cup and World Championship victories already in the books, improving the legendary Flow wasn't easy, but input from the best riders in the world and countless hours spent sweating even the smallest of details has led to a rim that redefines what even we thought was possible.

The new Flow EX is lower, wider, and meaner, offering a lower profile sidewall and redesigned Bead Socket Technology for maximum durability and tire seal on even the most punishing of technical trails. We kept the weight low, but the new EX offers 14% thicker sidewalls for maximum dent resistance and a 33% thicker spoke bed for added pull-through strength. Increasing the outside width of the rim to 29.1mm and the interior width to 25.5mm let us reshape the bead socket for an even tighter seal and allowed our internal arch to add even more stiffness to the rim's structure.


  • For enduro, trail, and all mountain use
  • Bead Socket Technology (BST) for superior tubeless performance
  • Rim width: 29.1mm external and 25.5mm internal for maximum tire volume
  • Reinforced spoke bed
  • Stronger and lighter low-profile sidewalls for quicker acceleration
  • Compatible with standard tires when used with or without tubes


Rim Internal Width:25.5mm          ETRTO:559x25.5 (26”) / 584x25.5 (27.5”) / 622x25.5 (29”)
Rim External Width:29.1mm ISO:29.1
Rim Depth:17.8mm Tape:25-27mm
Hole Count:32-hole or 36-hole (29” Valve:Presta
Rim Color:Black Max Spoke Tension:125KgF/1225N
Material:6061 Aluminum Alloy Max Pressure with 2.3" Tire:38psi
Brakes:Disc only Max Pressure with 2.7” Tire:35psi
ERD:537mm (26”) / 562mm (27.5”) / 601mm (29”) Rim Weight:490g (26”) / 510g (27.5) / 545g (29”)


Collections: MTB Rims, Rims