NEW! Borealis CARBONdale Rims!

Carbon Rim Release Photo 2

Borealis Bikes- CARBONDALE Rim!

COLORADO SPRINGS, CO- Borealis Bikes, maker of high-end carbon fat bikes and accessories, has just announced the release of their new CARBONDALE rim.  Named after the amazing small town outside of Aspen, CO, the Carbondale rim represents multiple leaps forward in the evolution of fat bikes.  Extreme stiffness, lightweight, and easy tubeless set up make the Carbondale rim an incredible upgrade to any fat bike out there. On to the details!

TUBELESS: The Carbondale rim makes the days of foam strips, sealant tape, blown off liters of Stan’s sealant and ringing ears a thing of the past.  The rim is designed for a very tight fit between the bead and rim, with a large bead hook and lock to keep the tire in place, even at low pressures.  It takes roughly 3-5 minutes for the average mechanic to set these rims up tubeless, and Borealis recommends using 45NRTH tires for this.  Only a Stan’s tubeless valve and sealant tape such as Stan’s yellow spoke tape is needed, along with 60 grams of Stan’s sealant.  The tires seat at roughly 22-25 PSI and will stay in place at standard fat bike riding pressures.

STIFFNESS: The CARBONDALE rim was designed for hard use, not just for getting a low number on the hanging scale.  It is double walled construction, with a strong triangular shape and reinforced spoke bed.  These are manufactured using the latest pressure-molded rim technology with a removable air bladder in between the 2 rim walls.  The lateral stiffness is significantly higher than that of an aluminum rim and can be noticed immediately when ridden.  The 85mm wide rim provides an excellent platform for both 4 and 5 inch tires.

Borealis rim bike release photo 7

WEIGHT:  The 85mm wide double-walled CARBONDALE weighs 590 grams.  This is pre-production weight, so final production weights may vary slightly.  These rims, set up tubeless with 45NRTH Husker Du tires and Borealis hubs on a Borealis Yampa XX1 size large bike brought the weight to 21 pounds 8 ounces, with an extremely practical build.

Borealis Bike with carbon rim release photo 6

AVAILABILITY:  These rims are in final pre-production stage.  Borealis is now taking pre-orders for the rims and is predicting they will begin shipping the first week of November.  Interested parties can contact their local Borealis dealer or contact Borealis directly for pre-order information.

Carbon Rim Release 1


590 grams – (editor’s note – a Surly Holy Rolling Darryl weighs – 860 grams)

85mm width

Easily tubeless compatible

Super-Stiff Double-walled construction

$1599 MSRP for 1 pair of rims

For more info visit –




15 Responses to NEW! Borealis CARBONdale Rims!

  1. WyoRacer September 13, 2013 at 4:38 pm #

    *insert cat whistle here*

  2. swiftjesse September 13, 2013 at 5:19 pm #

    $800 for a rim? Are they carbon?!

    • AKBIKE September 13, 2013 at 6:41 pm #

      Did you really ask if they were carbon?

    • Erik Brofos September 13, 2013 at 8:24 pm #


  3. mgindle September 13, 2013 at 7:28 pm #

    @swiftjesse “are they carbon?!”

    Can you read?

    • aguy September 16, 2013 at 2:42 am #

      The article doesn’t say what material these rims are made of.

  4. Aaron September 13, 2013 at 10:34 pm #

    I live in Carbondale, but I can’t afford the rims named for my town. Nice gesture, though.

  5. freisianpug September 14, 2013 at 3:51 am #

    Oh stop whining. If you think they are too expensive, here’s a thought, don’t buy them. Meanwhile, be glad there are people out there making new toys that will no doubt trickle down in time and make your riding life better. You can’t stop progress, but you can choose whether or not you feel obliged to keep up, or whether you just have a bike and ride it regardless.

  6. Nigel September 14, 2013 at 12:34 pm #

    There are other reinforcements that exist. The price could come way down with the use of glass fiber, basalt fibers, etc, with strategically place carbon fibers to add stiffness where needed.

  7. Angry Andy September 14, 2013 at 5:17 pm #

    Wow! Cool stuff coming out, can’t wait for the Interbike reports to start coming in. As for these rims they are way cool but a bit pricy, there are other options that are lighter and less expensive, just not as wide. And as stated above about the trickle down effect, that will come into play probably sooner than you think. In the past year there have been 4 Carbon fat frames released, carbon rims will be next.

  8. Boomking September 15, 2013 at 6:28 am #

    Too $$? Welcome to the world of high end! Ever show up to a road, cross or mtn bike race? You’ll see dozens of 4k frames and 2k wheel sets.
    All that said my friend hits the same races on his beater pugs and hands it to them…
    I’m holding my breath for a set of 50mm stans for better tub less set up.

  9. JYB September 16, 2013 at 9:49 am #

    I’ve been loving my Schlick Northpaw rims for riding all kinds of trails this summer. I’d love to see a carbon rim like the Borealis but 47-60mm in width for summer riding. A 50mm carbon rim designed like the Borealis, I’m assuming, would be lighter, stiffer, and stronger than a 50mm Al rim. Non-ghetto tubeless would be sweet!
    These rims are expensive, but no more expensive than Enve rims. Maybe Enve is producing the rims for Borealis???

  10. STEVE O September 17, 2013 at 6:03 pm #

    Does that spoke hole pattern work for a offset wheel like a moonlanders?Don’t whine about price Mavic and all the others will charge the same for something far less specialized, not that I would spend that for apair of rims.

    • SirSluggo October 10, 2013 at 2:44 pm #

      I would say that they are not compatible with offset wheels. Just a guess but that would be mine. Who knows though. Maybe they are compatible.

      I think that these rims are sweet! However, the price of bikes is honestly getting a little bit ridiculous. I know that there is research and development factored into the equation but in alot of these cases some of the so called inovations are just copies of existing components slightly changed to suit their needs. I would love to see what one of these rims cost to manufacture in CHINA or AMERICA!

      Also, I built up what I thought was a pretty sweet fatback and it came in right around 31lbs with decent stuff on it and this Borealis is 10 lbs lighter?????? Seriously????? I almost don’t believe it. Granted if I lose the double up front along with the accompanying shifter and derailer along with switching the 27 TPI Nate and Larry out with something lighter I guess that I could lose maybe 4 lbs???? But 10 fricken lbs to me is amazing! Hats off to Borealis!

  11. Ed G. November 3, 2013 at 4:53 pm #

    Can this rim be used with the Bud/Lou 4.8″ tires????? Since this is tubeless, is there any specific setup to safely accommodate for a Bud/Lou par without fear of falling them off?

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