Promo Borealis Telluride Alloy NX Eagle 12 speed




Collections: Flume & Telluride Aluminum Fat Bikes

Product type: Fat Bike

Vendor: Borealis Bikes Canada

Tags: alloy, aluminum, bike, fat, fatbike, Telluride


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No substitutions or changes to components. Not assembled.

If you have ever been to Telluride, Colorado you quickly realize this is one of the most amazing places on the planet. It is only fitting for Borealis to name our newest Fatbike after Telluride which is truly one of our most amazing bikes so far! Designed with adventure in mind it features lightweight, 6000-series aluminum, rack mounts, 27.5” alloy wheels and an extended 120mm Manitou suspension fork for your downhill enjoyment! As with all of our exceptional bikes standard issue is a carbon bar, carbon post and a carbon fork when selecting the rigid option. Wait, there’s more! Bottom bracket spacing is 83mm and comes standard with the RaceFace Next R Carbon Crank thus reducing the Q factor down significantly from our standard 100mm BB’s. SRAM Eagle 12 speed components simply round out perfection! Now the best part for last: The Telluride will accommodate up to a 4.5” rear tire! Nothing else on the market offers all of this with the exquisite quality which has defined Borealis since 2013.

Please take note of the following: Shipping and handling charges do NOT apply to the NWT, Yukon, Nunavut and Labrador, remote areas or areas that do not have year round road access. For these area, please contact us. Photos DO NOT reflect actual build, please refer to specifications located below for more information.  Some items may be changed to same quality components depending on availability. Assembled by Borealis (85% build), some assembly required upon receipt. No assembly, requires complete build.

Bike will usually ship within 5-7 business days depending on time of the year.

All sales are final, no returns. All frames are covered by a 5 year warranty and crash replacement program.

SAFETY NOTICE:  Please note our bikes are designed for off road use and do not include safety reflectors which may be required for on road riding in your location.  If you require legal safety reflectors please contact your local bike dealer.

All directions of the Manufacturer or Retailer must be followed when using any product purchased through Borealis Bikes Canada. Specifically, bikes must be assembled by a qualified bike mechanic to ensure correct assembly. Borealis Bikes Canada will not be responsible for damage or injury caused by improper assembly of products purchased through our website or other website (Amazon, Craig's List, e-Bay, Google, BikeExchange, etc.) or if directions and instructions for proper use are not followed. You may not qualify for any applicable Manufacturer or Retailer warranty if you do not follow their policies for assembly and use. Please consult the Manufacturer or Retailer’s policies prior to assembly and use of your product.


- The Telluride is built on an alloy frame that draws on all our experience in making fat bikes at a much lower price

- 3 different color strips available: Teal, White or Merlot

- comes standard with a carbon crankset and an 83mm bottom bracket

- All aluminum frame with careful attention to finish details

- Borealis unique geometry for the best ride experience

- Reduced stand over height and Q Factor

Photos may not reflect actual build, please refer to specifications located below for more information.  Some items may be changed to same quality components depending on availability.



Borealis Telluride 6066 Lightweight Alloy (Metallic Silver w/ 3 decal options)


Borealis Carbon Rigid Fork 




Borealis: Front 15×150 Rear 12×177


Mulefut 27.5x65mm


Wheelsmith Black


Wheelsmith Silver Brass


Maxxis 27.5x3.8"


Borealis Carbon Bar 35mm


Borealis 70mm


Borealis Carbon Seatpost




Ergon GA30


Race Face Next R (Carbon) w/ 30T Chainring

Rear Derailleur

SRAM Eagle NX 12 Speed




SRAM NX Eagle 10-50


SRAM NX Eagle 12 Speed


SRAM Level T Hydraulic Brakes

DT/CS Protector

Lizard Skins




Begin by taking a rough size approximation on the chart below that is based on height, then select the corresponding bike with your fit needs by using the geometry chart further below. We recommend a similar fit to you mountain bike, so grab a measuring tape and dial it in.


Based on our research, riders at the heights below will usually take the corresponding frame size. If you’re at a transitional height that spans two sizes, look at the geometry chart to get the Stack and Reach you like based on other bikes you are comfortable on.



Stack and Reach are the fundamental fit elements, they are both measured relative to the bottom bracket. When choosing the Borealis that is right for you, it’s important to find a balance in these measurements to ensure the best performance.

All sales are final, no returns. All frames are covered by a 5 year warranty and crash replacement program.


Size S (15") M (17") L (19") XL (21")
Head Angle 68.5 68.5 68.5 68.5
Head Tube Length (mm) 115 120 135 150
Trail (offset) 51 51 51 51
Exact Top Tube (mm) 582.9 588.4 616.8 631.4
Effective Top Tube (mm) 595 610 640 660
Chainstay (mm) 475 475 475 475
Seat Angle 73 73 73 73
Seat Tube (mm) 381 432 484 534
Reach (mm) 402.1 415.7 441.5 457.2
Stack (mm) 652.9 657.5 671.5 685.5
BB drop (mm) 70 70 70 70
BB width (mm) 83 83 83 83
Wheelbase (mm) 1155.5 1171.8 1203 1224.2
Fork Lenght (AC) Rigid / Pro (mm) 531 531 531 531
Fork Lenght (AC) Mastodon EXT (mm) 551 551 551 551
Imagine if you could be satisfied and content with your purchase. That can very much be your reality with the Promo Borealis Telluride Alloy NX Eagle 12 speed.

Inventory Last Updated: Jan 17, 2020