Tested: Rolf Prima Ralos 27.5 Wheelset

27.5 Wheels

Tubeless Compatibility

Rolf Prima uses the Stans NoTubes BST technology so these wheels are built for tubeless and tubeless ready tires. Each wheelset is shipped with tape and tubeless valves. We very quickly used these wheels as tubeless with Hutchinson tires and had no issues whatsoever.

Rim Width

Outer diameter is 24.5 mm and 21.5 mm on the inner diameter. These are not wide by today’s standard but they are sufficient for XC all the way to light All Mountain duty.

Our Experience

We mounted these up tubeless on or beloved Norco Sight 27.5 bike and got on with the riding. It looked a little odd at first having such big gaps in the spoke pattern on a mountain bike but there was not really an issue with it. Debris can get caught in the spokes more easily but it was never an issue for us.

The wheels were smooth from day one as the bearings were free spinning with minimal binding. The ratchet mechanism felt precise like a Swiss watch and it just worked without any ‘popping’ noises whatsoever. When freewheeling, the wheels were loud but not obnoxious like some that we’ve tried. We’d say that it’s in the 65% perecentile in noise level compared other mountain wheels we’ve tried.

So we just used this wheel everyday on every kind of trail and they just performed. Compared to a couple other wheelsets that cost more than twice as much, we could never really tell the difference. The others may have been 100 grams lighter and better for 200+ lb. riders, but for this 150 lb. tester, the Rolf wheelset seemed ideal.

So for $900, Rolf Prima delivers a fine wheelset with the Ralos. They’ve only been doing mountain bike wheels for three years, but we believe that they will gain many more fans as mountain bikers get to try their wheels.

  • Available in 29”, 26”, 650b/27.5”
  • Alloy clincher, 24.5mm wide tubeless compatible and disc specific rims
  • 24/24 spoke count
  • XST hubset with steel free hub body
  • 29” – 1630gm
  • 26” – 1495gm
  • 650b/27.5” – 1590gm
  • Available Front: 9mm QR or 15mm thru axle
; Rear: 135mm QR or 142mm x 12mm thru axle; XD driver option for SRAM XX1 compatibility
  • MSRP $899

For more information visit www.rolfprima.com

About the author: Francis Cebedo

The founder of mtbr and roadbikereview, Francis Cebedo believes that every cyclist has a lot to teach and a lot to learn. "Our websites are communal hubs for sharing cycling experiences, trading adventure stories, and passing along product information and opinions." Francis' favorite bike is the last bike he rode, whether it's a dirt jumper, singlespeed, trail bike, lugged commuter or ultralight carbon road steed. Indeed, Francis loves cycling in all its forms and is happiest when infecting others with that same passion. Francis also believes that IPA will save America.

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  • Reformed Roadie says:

    Francis, any comment on the Hutchinson Cougars mounted to the test wheels?

  • Francis Cebedo says:

    Hutchinson Cougars yes. They’re perhaps the best 27.5 tires I’ve tested to date.


  • mp says:

    Rolf has been making mtb wheels far longer than 3 years. I have a pair of rolf satellites sitting here beside me… probably circa 2000.

    These were great wheels… as luck would have it I’m replacing them today… that’s 10 years of service. I didn’t love the proprietary rims, but they gave me no issues whatsoever so it wasn’t a problem ultimately. I don’t think I ever needed to true or tension them. Last year the hub bearing race pitted in the rear. The front is still running true.

    Wasn’t even aware rolf was still around. I’ll definitely give them a second look.

  • Mark Wynn says:

    Original Rolf “Sestriere” were on my Schwinn Paramount Ti (Serotta-built) and I got such great service out of them that I purchased two more Rolf Prima wheelsets, a very lightweight set for time trials and a more robust (but still light) set for hard duty training on rough county roads. I weigh about 215 and even the lightest set has retained perfect true for over 10 years.

  • roger says:

    “we just used this wheel everyday on every kind of trail and they just performed” -it wouldn’t hurt to name some trails you rode this on so as readers get a better feel. Fire roads don’t count!

  • Scott says:

    Per Rolf Prima, the older wheels were built under license by Trek. The compete details can be found on Rolf Prima’s website: http://www.rolfprima.com/products-rolfwheels.php

  • Scott says:

    I have personal experience with the earlier, Trek produced, Rolf Dolomite Disk wheelset, on my 2000 model-year 8500LT. I have ridden this bike approximately 2000 miles per year, 70/30 road & bike path/single track. Front and rear hubs are still good. I have broken 3 spokes over the years, all on the rear wheel. At least one of these breaks was courtesy of trail debris. Only truing required was after a spoke broke, until recently, when I discovered the rear rim had developed a small hairline crack. IMHO, this is excellent service life for a me, as I am 210 pounds, geared up,

  • Geoff Huber says:

    I have been thrashing my 29r Ralos for 4 seasons now. This includes competing in the Cross Crusade series as well as some XC racing. I have used them for a lot of gravel riding too. As a 20 year industry veteran and an avid racer I am usually pretty tight lipped when it comes to openly giving praise to a product….but these wheels deserve some real praise. I did 18 cross races in 2014 without a SINGLE burp…not a one. I ran the WTB CrossWolfs with a double wrap of Stans tape on the rims. I have replaced the bearings once during the last four years…but have never had to true them or had any issues with spoke tension what so ever. The folks at Rolf are all very passionate about what they do and it shows in the quality of their products. Rolf Prima….fast, light, and super durable. Thanks Rolf…and long live long rides.

    G Huber

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