Stan’s NoTubes Flow MK4 Rim

Durability and an almost uncanny feeling of control on the trail have made Flow rims the preferred choice of multiple Red Bull Rampage riders, and today’s Flow goes even further. The Flow MK4’s reinforced spoke bed, combined with the offset drilling of the asymmetric design, builds into an incredibly durable wheel that brings added confidence to every ride. Unlike many rims, the BST Asymmetric shape is designed to equalize resistance to dents and tire bead retention on both sides of the rim under extreme conditions. Combined with Stan’s patented Bead Socket Technology, the Flow MK4 rim offers the easiest tubeless setup and most reliable airtight performance on the trail.

• Low-profile 30mm internal width optimizes tire shape, traction, and control for 2.3-2.6 tires
• Durable 6069 aluminum with welded joint and reinforced spoke bed
• BST Asymmetric design combines Stan s legendary easy tubeless inflation with a stronger, more balanced wheel build
  

  Specifications
  Brake Track	None
  Color	Black
  Wheel Size	29″
  Eyelets	None
  Hub Drilling	32
  ISO Diameter	622 / Road / 29″
  Manufacturer Spec ERD (mm)	600
  Rim Center Offset (mm)	3
  Rim Depth (mm)	18.9
  Rim Joint	Welded
  Rim Material	Alloy
  Rim Width (External)	33.6
  Rim Width (Internal)	30
  Tire Type	Tubeless Ready
  Valve Length	Short 32-40mm
  Valve	Presta
  Weight	521