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Named after Echo Canyon in Dinosaur National Monument up in the northwestern boonies of Colorado, the echo is the first performance-oriented, full carbon frame designed around the brand new RockShox BLUTO fat bike suspension fork. The extreme lateral stiffness combined with geometry optimized for the BLUTO’s 100mm of travel truly revolutionized fat biking. We also spec 35mm clamp stems and handlebars on our top two build kit models; this new oversized standard is a perfect match for the extra-wide tires of fat bikes. Internal dropper seatpost routing is the cherry on top of the echo’s design features that make it stand out as a do anything, ride anywhere, year round adventure shredding machine. See the full specs for each build kit below.
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
|Fork||Borealis Rigid Carbon Fork|
|Headset||Cane Creek 40|
|Hubs||Borealis. Front 15×150 Rear 12×197|
|Rims||Turnagain Tubeless FTD80|
|Spokes||Wheelsmith Black DB|
|Nipples||Wheelsmith Black Alloy|
|Rim Strips||Turnagain RS80|
|Tires||Dependent on Selection|
|Bar||Borealis Carbon 35mm|
|Stem||RaceFace Turbine 70mm|
|Post||Borealis Carbon Seatpost|
|Saddle||Ergon SME30 EVO|
|Crankset||RaceFace Turbine 30t|
|Rear Derailleur||SRAM X01 1×11|
|Cassette||SRAM XG-1195 10-42|
|Shifters||SRAM X01 Trigger|
|Brakes||SRAM Guide RS w/160mm rotors|
|DT/CS Protector||Lizard Skins|
GEOMETRY & SIZING
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.
RIDER HEIGHT RECOMMENDATIONS
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|