Flow MK3 Wheel
- Tubeless ready with rim tape and valves installed
- 29mm internal width for tires up to 2.8"
- Low-profile shape rolls faster and helps stop tire pinch flats
- Rim shape balances radial compliance with lateral stiffness
- 6069 alloy is stronger than conventional alloys
- Neo hubs accelerate quicker and last longer
- Built on the proven success of our Flow EX on the World Cup DH circuit
- Most trusted tubeless system for easy setup and low maintenance
- Sapim Secure Lock aluminum nipples
- Available for SRAM XD and Shimano HG cassettes
- Available for all current axle systems, including Cannondale Lefty SL, Lefty Supermax, SRAM Predictive Steering, Boost 110mm, Boost 148mm, 150mm, and Super Boost Plus 157mm spacing
- WideRight optimized for 2.35”-2.80” Trail and All-mountain tires
Stan's Flow rims have had a long history as the go-to trail and all-mountain wheelset for riders around the world, and the Flow MK3 continues the evolution. Stan's Flow MK3 wheels have claimed victories in both World Cup DH and Enduro World Series races, while still being light enough for all-day trail rides. Stan's patented tubeless bead socket technology offers the easiest and most secure tubeless setup in the business. The patented low-profile shape of the rim also resists pinch flats and reduces overall rim weight. The Flow MK3's 29mm WideRight internal rim width provides the perfect balance of tire stability and traction. Laterally stiffer and more durable, the Flow MK3's 6069 alloy is also lighter and stronger than conventional 6061 alloy. Born and bred for control at speed and perfect for technical trails, Stan's Flow MK3 in a class by itself for trail and all-mountain performance.
|Rim Internal Width:||29.0mm|| ||Rim Weight:||459g (26") / 480g (27.5") / 527g (29")|
|Rim External Width:||32.3mm|| ||Wheelset Weight:||1739g (26”) / 1794g (27.5") / 1905g (29")|
|Rim Depth:||16.1mm|| ||Front Wheel Weight:||809g (26”) / 836g (27.5") / 892g (29")|
|Spokes:||Sapim Force Black 2.0/1.7/1.8mm|| ||Rear Wheel Weight:||930g (26”) / 958g (27.5") / 1013g (29")|
|Nipples:||Sapim Secure Lock Alloy Black|| ||ERD:||542mm (26") / 567mm (27.5") / 605mm (29")|
|Hub:||Neo with Durasync|| ||ETRTO:||559x29.0 (26") / 584x29.0 (27.5") / 622x29.0 (29")|
|Hole Count:||32-hole|| ||ISO:||26"x32.3mm / 27.5"x32.3mm / 29"x32.3mm|
|Rim Material:||6069 Aluminum Alloy|| ||Tape:||30mm|
|Rim Color:||Black|| ||Max Spoke Tension:||125kgf (1225N)|
|Hub Color:||Black|| ||Max Pressure with 2.4" Tire:||2.5 Bar (37psi)|
|Brakes:||Disc Only|| ||Max Pressure with 2.8" Tire:||1.7 Bar (26psi)|
|Valve:||35mm Presta|| ||Max Rider Weight:||250lbs (113 kilo)|
Our WideRight profile increases tire volume without negatively affecting tread shape or sidewall height.
BST rims are designed to match the shape of your tire's bead to create a safer and more secure air tight interface.
Our race-proven Neo hubs with Durasync & Neo Ultimate hubs with Speedsync offer the durability and faster engagement to handle today's most difficult trails and more aggressive riding style.
The difference between 20x110mm thru-axles and 20x110mm BOOST thru-axles explained
In the bike industry's never-ending quest to make nothing compatible with anything else, there are now two types of 20mm through axle systems: 20x110mm and 20x110mm Boost. Yes, really. But it's going to be OK. Let's go through this and help make sense of it together.
Does this even apply to me?
XC and Trail bikes get a pass on this one. If your bike uses a 15mm axle, as nearly everything outside of a full blown DH bike does, you can go back to watching videos on Pinkbike. Nothing to see here. But if you currently have or intend to purchase a DH fork or heavy duty single-crown fork with a 20mm through axle, or a wheelset for such a fork, the next few minutes of reading will hopefully save you some heartache and return shipping costs.
As we write this in late July, 2018, many fork manufacturers are beginning to move their disc brake mount location outward, making their forks compatible with "20x110mm Boost" hubs. Total spacing between the fork legs is still 110mm, and the axle diameter is still 20mm, so what does the "Boost" mean here? The difference is disc brake rotor placement and flange width, where the spokes attach to the hub. Although both hubs measure 110mm wide, the boost version features hub flanges that have been moved out 5mm to each side, which also pushes the disc mount closer to the fork. You can see this difference in the photo we have to the left. The goal of widening the hub flanges is to create a better bracing angle for your spokes and in turn a stronger wheel. These wider hub flanges mean the new 20x110mm Boost hubs have shorter end caps, and a whole different hub shell with wider flanges and a wider disc brake mount location. So a traditional 20x110mm (non-Boost) hub can't be truly be converted to 20x110 Boost with just something like a simple end cap swap.
Wait, can't I just add a spacer behind my rotor and convert any 20x110 hub to a 20x110mm Boost fork?
Technically, yep. But you lose the advantage of the wider flanges and stronger wheel, and you probably pick up a few disadvantages, too. Because things like rotor spacers almost always mean "weaker," we've chosen to make a specific 20x110mm Boost hub, and that's what we recommend using with 20x110mm Boost forks.