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Fat Bikes


Borealis Crestone Eagle NX 12 Speed Fatbike
Since 2013, Borealis has specialized in lightweight carbon fiber fat bikes. The tried and true Crestone is our flagship model, weighing under 30 pounds with standard options. Its frame geometry is optimized for riding in snow and sand with clearance for up to 5” wide tires. Paired with the most technically advanced components in the industry, the Crestone sets the standard for premium quality carbon fiber fat bikes. HIGHLIGHTS: Frame geometry provides responsive and nimble handling for variable conditions in snow or sand. Standard features include: Eagle NX 12-Speed drivetrain, rigid carbon fork, carbon handlebars, carbon seat post, durable Mulefut rims and internally routed cables. Tire clearance up to 26x5” and 27.5x4.5”. Compatibility for 100-120mm of suspension travel for more technical riding. Lightweight, durable carbon fiber frame comes with 3 bottle cage mounts and lizard skin protectors on both the down tube and drive-side chainstay. Crankset SRAM Eagle NX Crank Arms 175mm Alloy Rear Derailleur RD ENX 1 x 12 Chain KMC X12 Cassette PG 1230 11-50 Shifters SRAM ENX Brakes SRAM - Select Chain Ring 30 Tooth Frame Borealis Crestone Carbon Fork Borealis Carbon Rigid Fork or RL Bluto, Mastodon Pro Ext. Headset Borealis Hubs Borealis: Front 15×150 Rear 12×197 Rims Your Choice Spokes Wheelsmith Black Nipples Wheelsmith Silver Brass Tires Your Choice Bar Borealis Carbon Bar (35mm) Stem Borealis 50mm or 70mm Post Borealis Carbon Seatpost (31.6mm) Saddle Borealis Grips Borealis Bottom Bracket SRAM DUB 100mm DT/CS Protector Lizard Skins
Borealis Flume Mountain-Fatbike
Have it both ways! Our Borealis Flume bikes come dirt-ready with 27.5 X 3" plus tires and Bluto suspension forks. As a bonus, these are fully fat-compatible and ready for winter with the addition of a fatbike wheelset. With premium frame quality and only the best components, the Borealis Flume offers the best value on the market. This expedition-ready MTB mirrors the Crestone geometry, but does so in lightweight, 6000-series aluminum. Up mountains, down glaciers, and across deserts - the Flume is ready for action. There are all kinds of alloy bikes on the market, but none with Flume’s purebred heritage and durability. HIGHLIGHTS Traditional fatbike bike geometry is both responsive and nimble for variable conditions in snow or sand. Standard features include Eagle NX 12-Speed drivetrain, Rock Shox Bluto Fat Bike Fork. carbon handlebars, carbon seat post and durable Velocity 27.5 rims with dirt-gripping Schwalbe Nobby Nic 3" tires. New Moon offers HED alloy and carbon fatbike wheelsets to upgrade a summer-ready Flume demo starting around $1700. Contact us for more info.
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