The Stan’s Flow EX offers a wide, strong 29er disc option that doesn’t weigh a ton. The Flow EX, with a 25.5mm tubeless ready inner, at approximately 535g, strikes the balance between strength, width and weight. You can build them up into relatively light weight wheels, and pedal them anywhere you want to go. Given their inner width, you can happily run 2.5″ tires on them, and play around with low tire pressures. From our experience, we’ve found that the Flow EX often subs in as a DH type wheel set build, and/or for riders that are looking for strength and durability in general.
Build Level Breakdown
Stan’s Flow EX Tubeless Ready Clincher Specs
|Wheel Weights (approx)
|Stan’s Flow EX welded aluminum alloy clincher, tubeless ready
|≈535g average, 29er
|Tesa Tubeless Rim Tape Installed
|≈ 30 – 35g/wheel (varies based on overlap)
|Built with 3D internal stainless steel washers
|≈4g F, ≈4g R
|Standard Clincher with inner tube OR MTB Tubeless
|29er x 2.0″ – 2.4″
|Nipple Info (Brass)
|Sapim 12mm Brass Chrome Plated @ ≈ 1g ea
|32H = 32
|Nipple Info (Alloy)
|Sapim Alloy Double Square Polyax @ ≈ .34g ea
|32H = 10
|Spoke Info Leader
|Sapim Leader 2.0mm Stainless Spokes Black ≈ 6.5g ea
|32H = 208
|Spoke Info Race
|Sapim Race 2.0/1.8/2.0 Butted Stainless Spokes Black ≈ 5.65g ea
|32H = 180
|Spoke Info Dlight
|Sapim D-Light TCS 2.0/1.65/2.0 Butted Stainless Spokes Black ≈ 5.16g ea
|32H = 165g
|Front: 3 Cross
|Rear: 3 Cross (32H)
|Hub Info (option)
|170g F, 300g R
|Axle Info (option)
|QR 9mm x 100mm OLD
|QR 10mm x 135mm OLD
|DS Ctr to Flange
|NDS Ctr to Flange
|Sealed Cartridge Japan EZO Bearings
|Shimano/Sram “Splined” MTB 8/9/10/11 Speed + Shimano/SRAM Road 8/9/10 speed
|Shimano MicroSpline 12 spd (ST300 Thru Axle only)
|Freehub Sram XD
|Sram XD 1×11 + 1×12
|Quick Release Front 9mm x 100mm / Quick Release Rear 10mm x 135mm Thru-Axle Front 15mm x 100mm / Thru-Axle Rear 12mm x 142mm **Boost Front 15mm x 110mm / **Boost Rear 12mm x 148mm **Lefty Front Hub
(without QR’s or rim tape)
|29er Deore – Leader w/ Brass
|F ≈ 1023g
|R ≈ 1203g
|Set ≈ 2226g
|29er ST170/ST300 – Race w/ Brass
|F ≈ 917g
|R ≈ 1047g
|Set ≈ 1964g
|29er ST170/ST300 – Dlight w/ Alloy
|F ≈ 880g
|R ≈ 1010g
|Set ≈ 1890g
We will build this wheel set with any of the hub options above, but the standout from the list are the sealed bearing Speed Tuned ST170 (front) and ST300 (rear) convertible MTB 6-bolt disc hubs. The ST300 features 21 points of engagement with a solid freehub design. The freehub can swap out between Sram XD and Shimano HG or Shimano MircoSpline (12TA only), (in case you swap bikes), and the end caps are convertible between a bunch of different axle standards. True, the 21 POE has been eclipsed by many other higher POE count hubs that are currently in the marketplace, but it’s still higher than DT’s ubiquitous 18 POE Star Ratchet piece found in 350 hubs. Last but not least, these hubs feature superlative sealed cartridge bearings that spin smooth, and will hold up for the long haul.
In “stock” form, these wheels are built with Sapim Leader black stainless steel 2.0mm (14g) J-bend spokes in a 32 hole, three cross configuration front and rear. These spokes are an upgrade over most “new bike” spokes. Small details make big differences with regards to spoke wire, and even though there are lighter weight spoke options available, these straight gauge spokes still feature top quality stainless, with a precise finish that allows for precise wheel building.
There is an option to build these wheels with Sapim Race Double Butted 2.0/1.8/2.0 black spokes in a 32 hole, three cross configuration front, and rear. Sapim Race spokes offer legendary quality and performance. If you didn’t know a thing about spokes, know that your wheels would come with a really top-notch spoke product. That being said, we’re offering a spoke upgrade option, in the form of Sapim DLight 2.0/1.65/2.0 spokes. There are two great spoke manufacturers in the world, DT Swiss and Sapim, (in alphabetical order). Essentially, you might be able to find a spoke product that approaches their quality, but you’d be hard-pressed to find a company that makes a better spoke product than these two. All their spoke products, from straight gauge to their elliptically bladed and butted products, are all the best of the best. Sapim Dlight spokes will perform at the same relative level as Sapim Race or DT Competition spokes but will shave off approximately 75 – 80g from the wheelset.
The Stan’s Flow EX is a stellar wheelset option, in a field that’s composed of some of the best aluminum alloy MTB rims ever. Given their level of performance, they are an unbeatable deal, (coupon codes here). We’re not joking around here. If you don’t have a lot of time to research all the rim options in the marketplace, if you don’t have a lot of money, and if you can find this product page, maybe that’s Magic.
- Comes with tubeless tape & valves installed.
- The Stan’s Flow EX (welded joint), has a 25.5mm inner width, is 17.8mm tall, 29.1mm wide, and weighs about 535g (29er)
- Recommended for use with 29er x 2.0″ – 2.4″ tires
- These wheels are built with internal stainless steel washers.
- Wheelset weight will vary with end caps, freehub driver, and nipple selection. Tape + Valves adds approximately 35g for the wheelset, on average.