Description

Hard to miss, or pass, a Yampa.

The Borealis Bikes Yampa X0/X9 Complete Bike evolved from the company that was devoted to fatbikes from the beginning, welding standard-width rims to one another and manually modifying frames long before this carbon creation came to be. The Yampa reflects how incredibly far the once-niche genre has come, however, and this complete build allows you to take full advantage of Borealis' years of hard work.

Borealis adopted new standards for components and construction with the aim of delivering a product that improved on the competition in every measurable way. The result is a fatbike that comes in under 30 pounds, making it light enough to roll around all day without killing your spirits, but still tough enough to be called a fatbike. In fact, that low weight and the wide tires translate into an astonishingly fast package, able to plow lines that would slow down narrower wheels, whether pointed uphill or down. There's a reason you see these things at the races from time to time, and it's not always to be just hip and ironic.

It'd be easy to assume, then, that building a fatbike frame out of carbon would itself be enough to get attention and sell some bikes. That's not how Borealis approached the project, however, and it shows. The Yampa's construction techniques rival those of some of the most advanced road bikes on the market, and the attention to detail in the ride quality the frame delivers is much the same. The seatstays - built around 190mm hub spacing and capable of clearing up to 4.8-inch tires - are flattened to allow a bit more vertical compliance than would be possible with simple round shapes, and the chainstays are fattened up, like the tires, so that the bottom bracket is still stiff and responsive to input.

It rolls on 3.8-inch Surly Larry tires wrapped around Surly Marge Lite rims and laced via stainless steel spokes to Borealis' own hubs (190mm QR rear and 135x15mm thru-axle front). The 36/22-tooth Race Face Ride crankset, threaded to its 100mm BB shell, is practically indestructible. A light and reliable cockpit is found in the Truvativ Stylo T20 handlebars, stem, and seatpost, and we're very happy to report that the bike comes with one of our favorite saddles of all time - the WTB Rocket V - so comfort is a given. The SRAM X.0/X.9 drivetrain blend is also a shop go-to, for its low weight, snappy shifting, and all-season reliability.

The Borealis Yampa X0/X9 Complete Bike is available in four sizes, from Small to X-large, and in the colors Black/white, and Black/red.

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Here's what others have to say...

Is the product made ??in the USA?
Is the...

Is the product made ??in the USA?
Is the product made ??from?

Responded on

To answer your question the bike is manufactured in China. Which as you know has become a standard practice in most cases. This is not necessarily a bad thing because there are still very rigid quality assurance practices going on within this company.

If you need any other information please do not hesitate to give me a call or email me at ececala@backcountry.com

Thanks,
Enrico

5 5

Great Bike

  • Familiarity: I've used it several times

This is a great Bike, I use it in the beach, in gravel road and for a medium dfficulty down hill.
It is light, ride almost over everything and the big wheels replace the suspention.

Great Bike

What is the BCD pattern on the crank's...

What is the BCD pattern on the crank's spider? In some of the photos it's 104, in others it's 94.

Best Answer Responded on

STEP240070,

That photo you are seeing is the Surly OD crankset that Borealis originally spec'd and have made a rolling change to. The crankset spec'd on these bikes currently are the Race Face Ride 22-36 crankset which has a 104 BCD. If you have any additional questions please feel free to contact me at KKolbe@CompetitiveCyclist.com.

5 5

Take On The Tundra

  • Familiarity: I've used it once or twice and have initial impressions

I am not a winter person. My last two winters in Utah have been spent hibernating or occasionally skiing.
I was apprehensive about riding in the snow and not expecting to have fun on board the Yampa.

After five minutes, my apprehensions were gone. The Yampa is pure fun and like nothing I have experienced before. A few spots on the trail pot marked by horses and bison became a challenge other than that, it climbs like you would expect a carbon hardtail to climb, descends with the cushioning of a full- suspension mountain bike, and rallies through ice, snow, and mud. It’s a perfect machine for taking on the Utah tundra. Borealis hit a home run with the Yampa.

At 5'6 I feel comfortable on a medium

Take On The Tundra
4 5

You Need This Bike

  • Familiarity: I've used it once or twice and have initial impressions

You may not know it yet, but his is your next bike. Whether you have a Fatbike or considering your first, this is the penultimate Fatbike experience. The carbon frame is a magnificent form that is lightweight and functional. If you already have a Fatbike, then you crave a Borealis because it's lighter than whatever you're riding. If your the uninitiated then you can head straight to first class.

I rode this bike on singletrack that was packed down from other Fatbikes and hikers. Super fun, you're basically always in a drift. With <7 psi in the tires it was pretty good traction over bumps and could hold a line through a corner well. Not gonna lie, I laid it down a few times. I actually think this would be a great bike for flat pedals since you're pretty much always in a drift and then it's easy to plant a foot. I also pulled a trailer on a packed/plowed road. It felt under control on even the most slippery sections of road and even in 4" of fresh stuff.

Hits: Great looks, lightweight, geometry is spot on, excellent build for this price, great finish.

Misses: Handlebar is narrow. A bike of this prowess deserves a wider stance. Tires had some runout, I know it doesn't affect the ride really but it makes the product feel cheap. I'd have liked slightly lower gearing for deeper snow/slower speeds. Cable actuated brakes, while reasonably priced, had very little modulation and were noisy in the cold.

Don't pass GO, don't collect $200, go directly to the checkout and cash in on the Fat fun.

You Need This Bike
5 5

Bigfoot

  • Gender: Male
  • Familiarity: I've used it once or twice and have initial impressions

I have been a tyrannical weight weenie for the past 23 years of riding. So the thought of riding a heavy fat tire bike with the handling of a tugboat was not appealing. This thought was in the back of my mind when I checked out a Yampa demo at OuterBike in Moab. The test trail was a mix of hard pack, rock gardens, stretches of sand and tight turns. After a few pedal strokes, the overall lightweight of the Yampa's full carbon frame was noticeable. To my surprise, i wanted to hammer this bike. It was a bit of a revelation, I was passing guys on full suspension bikes without a problem. The last section of trail was made up by a long set of berms. The big tires were able turn into the berms at insane angles and the laterally stiff frame kept the bike on track. After getting a feel for the bike, i felt like a few changes could really personalize things for me. I would like to run the bike with a wide flat 720mm bar and a short 50mm stem. Also, playing with a lower tire pressure would help take the edge off some of the rocky areas of trail. Overall, I really like this bike and I can't wait to give the Yampa a try on some snow. brett@competitivecyclist.com

5 5

Hands down the best fat bike out there

  • Familiarity: I've used it several times

I've been interested in fat bikes since the Pugsley stormed the market a few years ago. I've ridden the Pugsley, Bear Grease, Mukluk, and various other fat bikes. They all felt sluggish in every condition. Although they provide a really comfortable ride quality, the handling felt more like I was trying to steer the stay puff marshmellow man into a corner, rather than a sweet fat bike. The Borealis Yampa is NOTHING like that. In fact, it is a million times better than that. While riding a Yampa in Southern Utah recently, the first thing I notice about the bike was how responsive it is. I didn't have to jerk the front tire up over obstacles as though I was sailing a yacht. When powering up short steep climbs, I never felt like my power was lost in translation, the bike just zipped up everything. The Yampa is definitely the fat bike I will be buying for all my fat bike adventuress.

5 5

borealis fatbike ...soooooooo gooooooood

  • Gender: Male

i test this Fat bike at the outerbike ..it was the fastest fat bike that i rode in my life and the most confortable, the chainstay is acting like a suspension and the bike still so stiff for the pedaling efficiency ..it was amazing ....i was so fast then i ask to borealis to got a sponsorship ..and bang i got it ..i am so proud to race with this bike...its a innovation. Thanks Borealis for your help...

5 5

wow-this bike is Fun!

  • Gender: Male
  • Familiarity: I've used it several times

I had the opportunity to ride this bike at Outerbike in Moab this year and had an absolute blast on it. The bike was so light weight and agile i totally forgot i was riding a rigid fatbike. If you are in the market for something to ride over the winter months in the snow or in the sand this is definitely the fatbike to get!

wow-this bike is Fun!