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Borealis Bikes Crestone XX1/Bluto Complete Fat Bike - 2016


Item # BOR000K

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  • Colorado, S ($6,050.00)
  • Colorado, M ($6,050.00)
  • Colorado, L ($6,050.00)
  • Colorado, XL ($6,050.00)
  • Northern Lights, L ($6,050.00)
  • Northern Lights, M ($6,050.00)
  • Northern Lights, S ($6,050.00)
  • Northern Lights, XL ($6,050.00)
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Item # BOR000K

Fast fatty.

Rightfully or not, fat bikes have garnered a reputation as the slow, plodding adventurer of the bicycle world, but Borealis blows that old stereotype out of the snow with the 2016 Crestone XX1/Bluto Complete Fat Bike. Pairing a stiff carbon fiber frame, plush fat tires, a Rochshox Bluto suspension fork, and SRAM's top-end XX1 groupset, this bike is a relatively lightweight and versatile steed chomping at the bit to take on any snowy trail adventure. Tell your other bikes they'll be getting a lot of rest this winter, layer up, and head out into the wilderness.

Borealis built the Crestone frame by pairing cutting-edge carbon fiber construction methods to finely tune the ride quality, resulting in a light, strong frame that will hold up to heavy use. That’s particularly important since the addition of the 100mm travel Bluto invites even more aggressive riding over crunchy terrain. Compared to the Echo, the Crestone clocks in at a claimed 150g lighter and boasts a shorter top tube and stack height and a slightly steeper head tube angle. Those geometry changes result in tighter steering, making this bike one of the more nimble fat bikes available.

The Crestone clears massive 4.8in tires on 80mm rims that provide a solid platform to roll while remaining sprightly compared to the extra-fat 100mm rims found on the Echo and Yampa. To achieve that degree of clearance, Borealis has relied on another industry first; namely, a 197mm rear hub, which is held firmly in place by a Maxle quick-release thru-axle. That oversized axle makes for a surprisingly stiff rear end and perfect drivetrain alignment with the 100mm threaded bottom bracket shell.

Tech Specs

Frame Material:
carbon fiber
RockShox Bluto
Front Travel:
100 mm
Cane Creek 40
SRAM XX1 11-speed
Front Derailleur:
Rear Derailleur:
SRAM XX1 11-speed
32 t Race Face Next SL
Crank Arm Length:
175 mm
10 - 42 t SRAM XG-1199
SRAM Guide Ultimate
Brake Type:
hydraulic disc
180 / 160 mm SRAM Centerline
Race Face Next SL 35
Handlebar Width:
740 mm
Ergon GA2
Race Face Turbine
Stem Length:
70 mm
Ergon SME30 EVO "Borealis"
Race Face Next SL 31.6mm
Turnagain FR 80 FTD Tubeless
Front Axle:
15 x 150mm
Rear Axle:
12 x 197mm
Maxxis Minion FBF EXO TR
Tire Size:
26 x 4.8 in
not included
Lizard Skins DT/CS Protector
Recommended Use:
snow and sand
Manufacturer Warranty:
5 years on frame
Actual Weight:
Colorado, L: 13400g

sizing chart

Crestone size by rider height


Geometry chart


Geometry Chart



Seat Tube


Effective Top Tube






Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop




S 15.04in 23.02in 23.5in 16.04in 4.13in 70o 73o 2.36in 18.07in
M 17.01in 24.01in 24.05in 16.65in 4.72in 70o 73o 2.36in 18.07in
L 19.06in 24.67in 24.61in 17.22in 5.31in 70o 73o 2.36in 18.07in
XL 21.02in 24.72in 25.16in 17.76in 5.91in 70o 73o 2.36in 18.07in

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Too expensive to break so easily

    I bought a Crestone elite directly from the manufacturer. Within 3 months the top tube developed a crack--this with no crashes. Borealis told me they wouldn't warranty the frame, but that I could buy a replacement for $800. The crack seemed superficial, so I kept riding. A few weeks later the rear hub completely blew out. I hated that laggy Borealis hub so I didn't even try to warranty that in favor of rebuilding with a real K-Swiss hub. This weekend a pedal strike did the top tube in--the thinnest and weakest place on the tube gave in, no impact, just flex.