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Borealis Bikes
Flume NX Eagle Fat Bike

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Flume NX Eagle Complete Fat Bike

Extend the riding season and play in the snow like a kid again with the Borealis Bikes Flume NX/Bluto Complete Fat Bike. Not only is riding a new bike in the snow exhilarating, but you'll also stay fit over the winter months and have a leg up on your riding buddies come spring. This bike is such a hoot to ride that even after the snow melts, the Flume is plenty versatile and fun that you'll continue to pound out frequent miles on non-snow covered trails, bikepacking expeditions, or even a coastline tour.


The lightweight 6066-series aluminum frame is paired with a lightweight and stiff carbon rigid fork so you can bomb down the sketchiest snow and ice covered singletrack with total confidence. The wide-range SRAM NX 1x drivetrain gives you plenty of gearing for tackling epic days in the snow-covered backcountry, loaded touring, or the burgeoning fat bike race scene. Four-inch wide rubber on 80mm rims gives you great flotation over the freshest powder and the geometry is honed from the experience that can only come from a company that specializes exclusively in crafting fat bikes. The frame's reduced standover height is super helpful with the frequent mounting and dismounting that is expected with heavy boots and pants. Borealis even specs a carbon handlebar and seatpost to help lighten the load and take the edge off the frozen corduroy ruts.


Details

  • A no-nonsense fat bike for winter adventures
  • Fat bike specific geometry blend agility and stability
  • Aluminum frame is lightweight and responsive
  • SRAM NX Eagle group offers plenty of range
  • Colorado-based Borealis focuses solely on crafting fat bikes
  • Item #BOR000X
Frame Material
6066 aluminum
Fork
Borealis Carbon Rigid
Headset
Borealis
Shifters
SRAM NX Eagle
Rear Derailleur
SRAM NX Eagle
Crankset
SRAM Eagle GX Alloy
Chainring Sizes
30t
Bottom Bracket
SRAM
Bottom Bracket Type
English
Cassette
SRAM PG 1230
Cassette Range
11 - 50t
Chain
SRAM 12 speed
Brakeset
SRAM Level T
Brake Type
hydraulic disc
Rotors
SRAM Centerline 160mm
Handlebar
Borealis Carbon 35mm
Handlebar Rise
9mm
Handlebar Sweep
9-degree
Handlebar Width
740mm
Grips
Ergon GA30
Stem
Borealis
Stem Length
70mm
Saddle
Borealis
Seatpost
Borealis Carbon
Wheelset
Mulefut 27.5 x 80mm
Hubs
Borealis
Front Axle
15 x 150mm Thru-Axle
Rear Axle
12 x 197mm Thru-Axle
Tires
Terrene Cake Eater
Tire Size
27.5 x 4in
Pedals
not included
Recommended Use
mud/sand/snow
Manufacturer Warranty
5 years on frame

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