Stans No Tubes Flow MK4 Rim
Featuring a robust 6069 aluminium build with a welded joint and a reinforced spoke bed, this mountain bike (MTB) rim is ready for all-day epics on your favourite trail routes. Stans No Tubes has also kitted it out with a low profile 30mm internal rim width that optimises tyre shape, traction and control for 2.3-2.6” tyres. This makes it more than capable of handling all the demands associated with long days on the trails and everywhere in between. In addition, its BST-Asymmetric design combines Stan’s legendary easy tubeless inflation with a stronger, more balanced wheel build.
30mm Wide Asymmetric MTB Rim
Since 2007, the Flow rim has been helping riders progress, push boundaries, and do more on their bikes. The original Flow was light, wide, tubeless, and strong. It redefined mountain bike rims and played a role in the evolution of riding. Today’s Flow MK4 continues the progression with a 30mm wide asymmetric rim designed to build an even stronger overall wheel.
Patented Bead Socket Technology
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 asymmetric rims, the Flow MK4’s BST-Asymmetric shape is designed to equalise resistance to dents and tyre bead retention on both sides of the rim under even the worst rock gardens and hardest cornering. 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.
Ramp up your progression and make every ride even better with the confidence of the Stans No Tubes Flow MK4 Rim.
Features:
- Material: 6069 Aluminium Alloy
- Use: Mountain Bike (MTB)
- Rim Width: Inner: 30.0mm; External: 33.6mm
- Rim Depth: 18.9mm
- ETRTO: 27.5″ Option: 584×30.0; 29″ Option: 622×30.0
- ERD: 27.5″ Option: 561mm, 3.0mm Offset mm; 29″ Option: 600mm, 3.0mm Offset
- Hole Count: 32 hole
- Valve Type: Presta
- Brake Type: Disc only
- Single or Pair: Single
- Weight: 27.5″ Option: 487g; 29″ Option: 521g
Technologies:
- Low-profile 30mm internal width optimises tyre shape, traction, and control for 2.3-2.6” tyres.
- Durable 6069 aluminium with welded joint and reinforced spoke bed.
- BST-Asymmetric design combines Stan’s legendary easy tubeless inflation with a stronger, more balanced wheel build.
- 3-year rim warranty with 1-year crash replacement.
Buy Stans No Tubes Wheels & Tyres from Chain Reaction Cycles, the World’s Largest Online Bike Store.



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