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 todays Flow goes even further. The Flow MK4s 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 Stans legendary easy tubeless inflation with a stronger, more balanced wheel build
• 3-year rim warranty with 1-year crash replacement

SPECS:

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