Since 2013, Borealis has specialized in lightweight carbon fiber fat bikes. The Crestone is our tried and true flagship model. The 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:

• Standard features include: SRAM Eagle NX 12-Speed drivetrain, SRAM Level T brakes, rigid carbon fork, carbon handlebars, carbon seat post, durable Sun Ringle Mulefüt rims and your choice of tires.
• 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 more technical riding.
• Lightweight, durable carbon fiber frame comes with internally routed cables, 2-3 bottle cage mounts and lizard skin protectors on both the down tube and drive-side chain stay.

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”

ASSEMBLY

Please view our SUPPORTpage to see the remaining assembly that is involved if you choose "Assembled by Borealis" in the build & price tool.

Wheels and Tires:

• All bikes come standard with tubes.
• If you order rim tape with your Mulefut rims, we will tape the rims and install the tires with tubes.
• HED Alloy and HED Carbon rims do not require rim tape for tubeless set up.
• Tubes must be removed and tubeless valves installed for tubeless set up. We recommended to have this completed by a professional bicycle mechanic.

SPECS:

GEOMETRY CHARTS

GEOMETRY CHART

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.