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Fat Bikes

Borealis Crestone Eagle GX
$4,200.00
Since 2013, Borealis has specialized in lightweight carbon fiber fat bikes. The Crestone is our tried and true flagship model. 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. Standard features include: - SRAM GX 12-Speed drivetrain - SRAM G2 RS brakes - Carbon handlebars - Carbon seat post - Sun Ringle Mulefut 27.5" x 65mm wheelset - Frame geometry provides responsive handling, offering maximum control for varying conditions in snow or sand. - Tire clearance up to 26x5” and 27.5x4.5”. - Lightweight, durable carbon fiber frame comes with internally routed cables - 2-3 bottle cage mounts - Lizard skin protectors on both the down tube and drive-side chain stay. BIKE SPECIFICATIONS* - Frame: Borealis Crestone Carbon - Rear Derailleur: SRAM GX Eagle 1 x 12spd - Shifter: SRAM Eagle GX 12spd Trigger Shifter - Chain: KMC 12 speed, silver - Crankset: SRAM Eagle DUB GX Crank, 30T Ring - Cassette: SRAM Eagle GX 12spd Cassette 10-50T - Rims/Wheelset: Sun Ringle Mulefut 27.5" x 65mm - Hubs: DT Swiss Hubs (Front 15×150 Rear 12×197) - Tires: 45NRTH Dillinger 4 - Fork: Carbon - Brakes: SRAM G2 RS - Headset: Borealis - Stem: Borealis 50mm - Handlebar: Borealis Carbon SL - Seatpost: Borealis Carbon Seat Post, 31.6 - Saddle: Borealis Saddle - Grips: Standard, Black COMPATIBILITY - Rockshox Bluto Fork tire size limitations: 26x5” or 27.5x4” - Mastodon Pro EXT Fork tire size limitations: 26x5” or 27.5x4.5” - Borealis Rigid Carbon Fork tire size limitations: 26x5” or 27.5x4.5” - Dually 29x45 and 27.5x45 Rims – Max tire width: 3” - All rims 65mm to 85mm wide are compatible with tire widths of 3.8” to 5” - HED Carbon 100mm Rims – Max tire width of 4.6” * Subject to change without notice.
Borealis Flume Eagle GX
$3,100.00
With premium frame quality and only the best components, the Borealis Flume offers the best value on the market. This expedition-ready fatty 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 fat bikes on the market, but none with the Flume’s purebred heritage and durability. Standard features include: - SRAM GX 12-Speed drivetrain - SRAM G2 Ultimate brakes - Carbon handlebars - Carbon seat post - Sun Ringle Mulefut 26" x 80 mm wheelset - Frame geometry provides responsive handling, offering maximum control for varying conditions in snow or sand. - Tire clearance up to 26x5” and 27.5x4.5”. - Compatibility for 100-120mm of suspension travel for increased comfort and control. - Lightweight, 6000-series aluminum frame - 2-3 bottle cage mounts - Lizard skin protectors on both the down tube and drive-side chain stay. BIKE SPECIFICATIONS* - Frame: Borealis Flume Alloy - Rear Derailleur: SRAM GX Eagle 1 x 12spd - Shifter: SRAM Eagle GX 12spd Trigger Shifter - Chain: KMC 12 speed, silver - Crankset: SRAM Eagle DUB GX Crank, 30T Ring - Cassette: SRAM Eagle GX 12spd Cassette 10-50T - Rims/Wheelset: Sun Ringle Mulefut 26" x 80 mm - Hubs: DT Swiss - Front 15×150, Rear 12×197 - Tires: Terrene Cake Eater 26" x 4.0 - Fork: Carbon - Brakes: SRAM G2 RS - Headset: Borealis - Stem: Borealis 50mm - Handlebar: Borealis Carbon SL - Seatpost: Borealis Carbon Seat Post, 31.6 - Saddle: Borealis Saddle - Grips: Standard, Black COMPATIBILITY - Rockshox Bluto Fork tire size limitations: 26x5” or 27.5x4” - Mastodon Pro EXT Fork tire size limitations: 26x5” or 27.5x4.5” - Borealis Rigid Carbon Fork tire size limitations: 26x5” or 27.5x4.5” - Dually 29x45 and 27.5x45 Rims – Max tire width: 3” - All rims 65mm to 85mm wide are compatible with tire widths of 3.8” to 5” - HED Carbon 100mm Rims – Max tire width of 4.6” * Subject to change without notice.
Borealis Flume Eagle NX
$2,600.00
With premium frame quality and only the best components, the Borealis Flume offers the best value on the market. This expedition-ready fatty 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 fat bikes on the market, but none with the Flume’s purebred heritage and durability. Standard features include: - SRAM NX 12-Speed drivetrain - SRAM Level T brakes - Carbon handlebars - Carbon seat post - Sun Ringle Mulefut 26" x 80 mm wheelset - Frame geometry provides responsive handling, offering maximum control for varying conditions in snow or sand. - Tire clearance up to 26x5” and 27.5x4.5”. - Compatibility for 100-120mm of suspension travel for increased comfort and control. - Lightweight, 6000-series aluminum frame - 2-3 bottle cage mounts - Lizard skin protectors on both the down tube and drive-side chain stay. BIKE SPECIFICATIONS* - Frame: Borealis Flume Alloy - Rear Derailleur: SRAM NX Eagle 1 x 12spd - Shifter: SRAM Eagle NX 12spd Trigger Shifter - Chain: KMC 12 speed, silver - Crankset: SRAM Eagle DUB NX Crank, 30T Ring - Cassette: SRAM Eagle NX 12spd Cassette 10-50T - Rims/Wheelset: Sun Ringle Mulefut 26" x 80 mm - Hubs: Velocity - Front 15×150, Rear 12×197 - Tires: Terrene Cake Eater 26" x 4.0 - Fork: Carbon - Brakes: SRAM Level T - Headset: Borealis - Stem: Borealis 50mm - Handlebar: Borealis Carbon SL - Seatpost: Borealis Carbon Seat Post, 31.6 - Saddle: Borealis Saddle - Grips: Standard, Black COMPATIBILITY - Rockshox Bluto Fork tire size limitations: 26x5” or 27.5x4” - Mastodon Pro EXT Fork tire size limitations: 26x5” or 27.5x4.5” - Borealis Rigid Carbon Fork tire size limitations: 26x5” or 27.5x4.5” - Dually 29x45 and 27.5x45 Rims – Max tire width: 3” - All rims 65mm to 85mm wide are compatible with tire widths of 3.8” to 5” - HED Carbon 100mm Rims – Max tire width of 4.6” * Subject to change without notice.
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