EXPECTED AVAILABILITY DECEMBER 2021
Features:
● 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
● New high-end premium hub
● Matched wheelsets use traditional J-bend lacing and share a single spoke length for
easy serviceability
● Connection program includes 5-year hub warranty, 3-year rim warranty, 1-year crash
replacement, and $10 donation to trail maintenance or advocacy group of your choice
Built to Push Boundaries
The Flow MK4 wheelset lets you do more. Since 2007, there's a reason the best riders in the world have come to us to ask for Flows. Corner harder, send it further, and carry more speed through any section of trail. Today's Flow MK4 gives you the control you need to push boundaries.
The Flow MK4 rim's patented BST Asymmetric shape creates the most reliable tubeless seal. The rim's durable 6069 alloy construction and 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. Strength and serviceability are long-standing priorities of every Stan’s wheel, and the Flow MK4 wheel takes those priorities further than ever before. The asym rim design allows for a single spoke length to be used on both the front and rear wheels. As with all Stan’s wheels, traditional J-bend spokes and lacing are used for their proven strength, ride quality, and serviceability.
Available with Shimano Micro Spline, HG, or SRAM XDR freehub, and 6-bolt or Centerlock brake style, with options to fit all popular axle configurations. Tubeless ready with rim tape installed. Wide, light, strong, and tubeless, the original Flow redefined what a mountain bike rim could do.
Today's Flow MK4 wheelset gives you the confidence to do even more.
What’s Included:
Flow MK4 wheels include pre-installed tape for tubeless use and presta valves.
Technology:
BST-Asymmetric, M-pulse, WideRight
Specs:
Rim Internal Width:
30.0mm
Rim External Width:
33.6mm
Rim Depth:
18.9mm
Spokes:
Spoke, Sapim, D-Light, 2.0/1.65/2.0
Nipples:
Sapim Double Square Alloy Black
Hub:
M-pulse
Hole Count:
32-hole, 32-hole
Drilling Style:
Symmetrical
Rim Material:
6069 Aluminum Alloy
Rim Color:
Black
Hub Color:
Black
Brakes:
Disc only
Rim Weight:
487g (27.5") / 521g (29")
Wheelset Weight:
1792g (27.5") / 1882g (29")
Front Wheel Weight:
820g (27.5") / 1017g (29")
Rear Wheel Weight:
1792g (27.5") / 1882g (29")
ERD:
561mm, 3.0mm Offset mm (27.5") / 600mm, 3.0mm Offset (29")
ETRTO:
584x30.0 (27.5") / 622x30.0 (29")
ISO:
27.5"x33.6mm / 29"x33.6mm
Tape:
33mm
Valve:
35mm Presta
Max Spoke Tension:
130kgf (1275N)
Max Rider Weight:
250lbs (113 kilo)
Max Pressure with 2.3" Tire:
39psi
Max Pressure with 2.6" Tire:
34psi
