Since 2007, the Flow rim has helped riders make progress, push boundaries, and achieve more on their bikes. The original Flow was lightweight, wide, tubeless, and very stable. It redefined mountain bike rims and played a role in the evolution of riding. The current Flow MK4 continues this development with a 30 mm wide, asymmetrical rim designed for an even more stable wheelset.

Unlike many other asymmetrical rims, the BST-Asymmetric shape of the Flow MK4 is designed to provide the same resistance to dents and tire bead formation on both sides of the rim, even in the worst rock gardens and the toughest corners.

Features:

• Low profile
• 30 mm internal width optimizes tire shape, traction, and control
• 33.6 mm external width
• ERD 561, 3.0 mm offset (27.5") / 600 mm, 3.0 mm offset (29”)
• Tape 33 mm
• Suitable for 2.3-2.6" tires
• The BST-Asymmetric offers a stronger, more balanced wheel construction
• 3-year rim warranty
• 1-year crash replacement.