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 as hell. 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.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 asym 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 equalize resistance to dents and tyre bead retention on both sides of the rim under even the worst rock gardens and hardest cornering. Combined with Stans 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 Flow MK4 asymmetric rims.
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 Stans legendary easy tubeless inflation with a stronger, more balanced wheel build
Specification
Rim Internal Width: 30.0mm
Rim Weight: 487g (27.5in) / 521g (29in)
Rim External Width: 33.6mm
Rim Depth: 18.9mm
ERD: 561mm, 3.0mm Offset mm (27.5in) / 600mm, 3.0mm Offset (29in)
Hub: M-pulse
ETRTO: 584x30.0 (27.5in) / 622x30.0 (29in)
Hole Count: 32-hole, 32-hole
ISO: 27.5inx33.6mm / 29inx33.6mm
Rim Material: 6069 Aluminum Alloy
Tape: 33mm
Rim Color: Black
Max Spoke Tension: 130kgf (1275N)
Max Rider Weight: 250lbs (113 kilo)
Brakes: Disc
Valve: Presta
Max Pressure with 2.30in Tyre: 39psi
Max Pressure with 2.60in Tyre: 34psi
