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Wider and still superlight

19mm inner rim width, for tyres up to 62mm

UST compliant

Improved rolling efficiency
Increased comfort
Easy to use

Strong and easy to built

SUP welded
Open Pro UST is rated 3.2 out of 5 by 10.
Rated 5 out of 5 by from UST system is tubeless perfection Recently bought a pair of handbuilt wheels with Open Pro UST rims, 32 spoke versions for cyclocross and gravel training. They are terrific. I have them paired with Mavic UST Allroad tires and Mavic valves. The tubeless setup is a dream - one layer of tape, tires mount easily with fingers only, and the bead seating process could not be easier. It makes a huge difference that the rims and tires are designed by the same engineers, to the same standards and dimensions, as opposed to the hit-or-miss, frustrating process of fitting Brand/Diameter X tires to Brand/Diameter Y rims. As they say on GCN, Mavic really have nailed tubeless.
Date published: 2018-07-02
Rated 5 out of 5 by from Very light, quite strong We put one of these on the rear wheel of my wife's bike. I found the center trough to be a big help in mounting the 28mm Conti Gatorskin UltraHardShell (folding) tire. First rim since my 1970's Weinmann's that had that center trough feature. Tire mounting and lock-in was very secure, mounting wasn't bad if you know how to use the center trough - get the beads all the way down in the trough before you try mounting or demounting the tire. I'm kind of amazed at the specs on the max width tire you can mount on this rim. Only regret is that I don't have a pair on my own bike - but the CXP Pros I have are quite adequate.
Date published: 2018-04-12
Rated 5 out of 5 by from great rim when you know what you are doing I am a pro mechanic, and since I understand how central relief channels on rims work, I can mount tires on this rim without tools. Excited for many miles with them!
Date published: 2018-01-28
Rated 1 out of 5 by from Seemingly impossible to mount tires on this rim Seemingly impossible to mount tires onto these rims.At least the tires I had avaialble to me.Tried specialized trigger 38mm and then conti 4 season 25mm. I had the edge in the center of the wheel and used gloves and soapy water to try to get the tire over the rim. Not sure if the velox tape added to the problem but a mm of tape in the channel should not prevent the tire from mounting. Edges on sections of the rim are fairly sharp. In the end I was unable to get the tires mounted and had damaged the bead of the tire.
Date published: 2019-04-04
Rated 1 out of 5 by from Abundance Of Flats Bought custom built wheel set from local bike shop. I have had more flats with this wheel set than I had in the previous 5 years with the prior wheel set ! ! ! It appears that the rim tape shifts over time to the point of exposing the spoke holes. Shop tried gluing the rim tape in place; however, that only results in the rim tape shifting slower. Specs include: Mavic RIM Open Pro UST 32: Black and Zipp RIM Tape wide 700c x 20 mm. If the suggestion is to use another RIM tape, please advise what I should tell the bike shop as to why the suggested rim tape would prevent the shifting. Thank you.
Date published: 2019-07-12
Rated 1 out of 5 by from Impossible to use - way too tight to mount tire I build up a wheel using this time, and was never able to even mount a suitable tire, using tools and all. Rim seems way too tight for the tires I tried, Hutchinson Fusion Tubeless, and Vredstein Fortezza all season with tube. This rim would be a nightmare to use on a long ride if you get a flat and need to get take tire off and put a tube in. Good luck getting tire back onto rim. I suspect you will be walking the rest of the ride. I re-build my wheel with a Hed Belgium rim instead. Too bad, as the Mavic looks nice, just not possible for me to use.
Date published: 2018-01-25
Rated 3 out of 5 by from Nice rims These are nice rims but, yeah, you've really got to become an "expert" in tire mounting as there is zero margin for error. I think this is pretty much true for lots of "tubeless ready" rims out there though. The days of just being able to mindlessly change out a a tube bare-handed (as you could do with old-school Open Pros) are gone. The tolerances required by "tubeless" are just too tight for any sloppy half-baked mounting job. You've got to work the tire into the center relief channel all the way around and the first time with a new tire will always be the toughest. You've also got to make sure you get the bead sated properly all the way around or you risk the tire blowing off the rim. Further, forget Velox and other cloth rim strips. They are too thick to use on tubeless ready rims. If you are scared of being stranded by a flat, practice a tube change 15-20 times at home and you will get the knack. You could also invest in a "tire bead jack" which provides enough leverage to mount any tire on any right-sized rim. If you just can't be bothered with all of this then stick to the old-school Open Pros which allow you to change out a tube blindfolded with one hand tied behind your back....but don't look nearly as cool as these.
Date published: 2019-08-12
Rated 5 out of 5 by from Fantastic tubeless rim. Laced to a set of R45 Chris King hubs, these rims are magic.
Date published: 2018-03-20
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Available Colors / Versions

  • Black 24 holes
  • Black 32 holes
  • Black 28 holes


  • 700C: 430 grams


  • Recommended rim tape: Mavic UST rim tape (not supplied with the rim)
  • Recommended nipple length: 12 mm
  • Recommended tyre widths: 25 to 47 mm
  • Valve hole diameter: 6.5 mm

Spoke bed diameter

  • Spoke bed diameter (ERD): 589 mm


  • Tubeless Ready (Mavic UST valve recommended - not supplied with the rim)
  • Clincher
  • Maxtal
  • Low profile
  • UB Control
  • SUP / Welded
  • Single eyelet
  • Traditional drilling
UB Control

UB Control

Usiné Brut Control
The braking surfaces are precisely CNC machined.



Couche Dure
This process creates a micro surface hardness of the rim.



Light and strong
Exclusive to Mavic, this specific aluminum alloy offers a higher strength to weight ratio than conventional 6106 alloy.



Stronger and smoother joint
Soudé Usiné Process. After bending, the rim joint is arc welded. The welded seam is then milled for a smooth finish.

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