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Borealis Bikes Echo GX Complete Fat Bike - 2016


Item # BOR000G

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Item # BOR000G

The best kind of winter fat.

Send those skinny-tired bikes into hibernation for the winter and get out in the snow with the 2016 Borealis Echo GX Complete Fat Bike. Borealis pairs a rigid carbon fiber fork and SRAM's one-by-eleven groupset to create a light, reliable, and versatile whip for the non-suspension fat bike traditionalists out there who still want all the benefits of carbon design. Your other bikes are going to get some time off this cold season.

The seatstay profiling on the Echo enables a degree of forgiving bump absorption, while the oversized chainstays keep the pedaling responsive when you stomp on the gas. Like the original Yampa, the Echo clears massive 4.8in tires on a 100mm wide rim. To achieve that degree of clearance, Borealis opts for a 197mm spaced rear hub, which is secured by a Maxle quick-release thru axle. The result is a dishless rear wheel, a surprisingly stiff rear end, and perfect drivetrain alignment with the 100mm threaded bottom bracket shell.

The design also provides enough clearance for a one-by or double drivetrain, regardless of your tire choice. Naturally, there's plenty of extra clearance for mud, snow, or anything else you're likely to find yourself riding through. The head tube is tapered, which takes advantage of the incredible stiffness provided by Borealis' rigid carbon fork. The frame's finished with a bike-packing loadout of three bottle cage mounts to keep you hydrated for long hours in the saddle and, at 1,370 grams for a medium frame, it’s far lighter than it appears.

Tech Specs

Frame Material:
carbon fiber
Borealis carbon fiber
Cane Creek 40
SRAM GX 11-speed
Front Derailleur:
Rear Derailleur:
SRAM GX 1x11spd
30 t Race Face Ride
10 - 42 t SRAM GX 1x11spd
Brake Type:
160 / 160 mm SRAM Centerline
Race Face Evolve 31.8x720mm
Handlebar Width:
720 mm
Lizard Skins 494
Race Face Evolve
Stem Length:
70 mm
Ergon SME30 EVO
Race Face Evolve
Turnagain FR80
Front Axle:
15 x 150mm thru-axle
Rear Axle:
12 x 197mm thru-axle
Surly Husker Du
Tire Size:
26 x 4.0 in
Recommended Use:
snow and sand
Manufacturer Warranty:
5 years on frame

sizing chart

Echo 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 15in 23.2in 4.1in 69.8o 73o 2.4in 18.1in
M 17in 24in 4.7in 69.8o 73o 2.4in 18.1in
L 19.1in 24.7in 5.3in 69.8o 73o 2.4in 18.1in
XL 21in 25.6in 5.9in 69.8o 73o 2.4in 18.1in

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Borealis Echo

    I live in Northern MN, I just went for another 3 hour bike ride in 4-6 inches of snow and had a great time. Bike geometry is great. Steering is great! body position is good for me. I am really happy with this bike. It is my second Fat bike. I have done several races with it and I felt confident and I did not fall. So, life is good.