Borealis Yampa XX1 Fat Tire Bicycle View larger

Borealis Yampa XX1 Fat Tire Bicycle

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Coolest Fat Tire Bicycle on Earth

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The XX1 Fat Tire Bicycle we’ve combined the lightest and most-elite mountain bike components from all disciplines of the sport into the optimal component package for any Fat Tire Bicycle. A full, World Cup-proven XX1 drivetrain, wide carbon RaceFace Next SL handlebars with a short 35mm clamp stem and 120tpi tires will allow you to put your riding buddies to shame on the single track. The RaceFace Next SL crank is the lightest weight fat bike crank available and will make you think you’re riding a “skinny tire” XC race bike.

FrameBorealis Echo
ForkRockShox Bluto RCT3 100mm
HeadsetCane Creek 40
HubsBorealis FH150
RimsTurnagain FR80
SpokesWheelsmith Black DB
NipplesWheelsmith Black Alloy
Rim StripsTurnagain RS80
Tires45Nrth Husker Du 120TPI
TubesTurnagain MagnumFAT
BarRaceFace Next 35mm
StemRaceFace Atlas 65mm
PostRaceFace Next
GripsLizard Skin Peaty Lock On
CranksetRaceFace Next SL 32t
Rear DerailleurSram XX1
ChainSram PG-XX1
CasetteSram XG-1199
ShifterSram XX1 Trigger
BrakesSram Guide RSC w/ 160mm rotors
DT/CS Protector

Seat Tube


Effective Top Tube


Head Tube


Head Tube Angle


Seat Tube Angle


Bottom Bracket Drop






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Borealis Yampa XX1 Fat Tire Bicycle

Borealis Yampa XX1 Fat Tire Bicycle

Coolest Fat Tire Bicycle on Earth