Echo 2×10

MSRP: $2,420.00


  • $0.00

Echo 2×10

Borealis Fat Bikes works with dealers across the country, find a dealer near you for the best pricing in your area!

The long fabled Echo model is an impressively equipped bike. The Echo carbon fiber frame has been combined with the stout 2×10 SRAM GX drive train. We then matched up the tubeless ready 65mm Turnagin rims to continue delivering an epic, comfortable ride, no matter what the conditions may be.

The echo is the first carbon fat bike frame ever to be designed specifically around the BLUTO fork.

  • Fully guided internal dropper post routing.
  • Fully guided internal cable routing
  • Clearance for 4.8” tires on 100mm rims.
  • 100mm Bottom Bracket shell
  • 42mm upper headset ID, 52mm lower headset ID
  • New 197mm rear spacing with 12mm RockShox MAXLE thru axle.
  • 3 water bottle cage mounts for those Epic Adventures
  • Available in Stealth Black
  • 1370 gram frame weight
  • Ultra-stiff, fat, and rally-ready carbon frame

Bike comes with black hubs and black rim tape. Photos may not reflect actual builds, please refer to specifications located on our website.

Frame Borealis Echo (Black)
Fork Borealis Rigid Carbon Fork or Bluto RL
Headset Borelais
Hubs Borealis. Front 15×150 Rear 12×197
Rims Borealis FTD 65
Spokes Wheelsmith Black Straight
Nipples Wheelsmith Silver Brass
Tires Surly Knard 3.8
Bar Truvativ T20 Alloy
Stem Truvativ T20100mm
Post Truvativ T20 Alloy Post
Saddle Borealis
Grips Ergon GA30
Crankset Race Face Turbine 2X
Rear Derailleur SRAM GX 10 speed
Chain KMC 10 SP
Cassette SRAM PG-1050
Shifters SRAM GX 10 Speed
Brakes SRAM Level T w/160mm rotors
DT/CS Protector Lizard Skins
Weight ~29lbs 10oz +2lbs for Bluto


Borealis offers four frame designs with unique fit and geometry to suit your every Fat Bike need. 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.

Effective Top Tube 23.23 in 24.02 in 24.72 in 25.55 in 590 mm 610 mm 628 mm 649 mm
Seat Tube Center to Top 15.00 in 17.01 in 19.06 in 20.98 in 381 mm 432 mm 484mm 533 mm
Head Tube 4.13 in 4.72 in 5.31 in 5.91 in 105 mm 120 mm 135 mm 150 mm
Seat Tube Angle 73 deg 73 deg 73 deg 73 deg 73 deg 73 deg 73 deg 73 deg
Head Tube Angle 69.8 deg 69.8 deg 69.8 deg 69.8 deg 69.8 deg 69.8 deg 69.8 deg 69.8 deg
Standover Height Due to various rim and tire options stand over is not identified.
Chainstay 18.11 in 18.11 in 18.11 in 18.11 in 460 mm 460 mm 460 mm 460 mm
BB Drop 2.36 in 2.36 in 2.36 in 2.36 in 60 mm 60 mm 60 mm 60 mm
Reach 16.14 in 16.54 in 16.93 in 17.52 in 410 mm 420 mm 430 mm 445 mm
Stack 23.50 in 24.06 in 24.61 in 25.20 in 597 mm 611 mm 625 mm 640 mm