Stans NoTubes Flow Mk4 Wheel Rear 27.5" 32H 6B 12x148mm XD-R - The Inside Line Mountain Bike Service Ltd.

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Stans NoTubes

Stans NoTubes Flow Mk4 Wheel Rear 27.5" XD-R

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Available in store

SKU: DWF470005

The fun wheel size from Stan's, in boost sizing to boot!


The Flow MK4 rim's patented BST-Asymmetric shape creates the most reliable tubeless seal. The rim's durable 6069 alloy construction and reinforced spoke bed, combined with the offset drilling of the asym design, builds into an incredibly durable wheel that brings added confidence to every ride. Strength and serviceability are long-standing priorities of every Stan’s wheel, and the Flow MK4 wheel takes those priorities further than ever before. As with all Stan’s wheels, traditional J-bend spokes and lacing are used for their proven strength, ride quality, and serviceability.

The M-pulse hubs at the heart of Flow MK4 wheels combine an absolutely bombproof magnetic locking engagement with incredibly smooth rolling. Based on the original innovative Project321 engagement system, the speed and durability of this system is unmatched. Unlike weaker pawl and spring designs, the M-pulse features six pawls with Neodymium magnets that offer virtually no resistance when coasting, but lock the pawl teeth into place far more reliably and consistently than springs. Each detail of the M-pulse hub was engineered to systematically eliminate weaknesses found in other designs. The 17mm axles are made of 7075 aluminum and roll on Enduro brand bearings, including a double-row freehub bearing tested to be far more durable than two individual separate bearings. The entire hub is also shielded, meaning no bearing seal is visible, offering superior protection for all conditions. With only 1.66°of rotating required for the M-pulse hub to engage, power is always instantaneous. Multiple tooth engagement provides a greater surface area to distribute load to improve both durability and speed. The angle of the pawls was even optimized to distribute stress away from the rotating bearings. Beyond the strength and speed of engagement, M-pulse hubs feature adjustable preload, allowing a tremendous decrease in drag for less resistance and more speed.



  • Rim: Flow MK4
  • Diameter: 27.5"
  • ERD: 561mm
  • ETRTO: 584mm
  • Internal Width: 30mm
  • Outer Width: 33.6mm
  • Rim Height: 18.9mm
  • Spokes Count: 32
  • Material: 6069 Aluminum Alloy
  • Tubeless Ready
  • Valve: Presta
  • Rim Weight: 487g


  • Hub: M-pulse 6 Bolt
  • Axle Diameter: 12mm
  • Spacing: Boost 148mm
  • Driver: XD-R
  • Spokes Count: 32

Additional Info

  • Spokes: Sapim D-Light 2.0/1.65/2.0mm
  • Nipples: Sapim Double Square Alloy
  • Wheel Weight: 972g

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