Keep the fat tires rolling through any season on the 2016 Borealis Flume GXBluto Complete Fat Bike. Pairing an aluminum frame, Rochshox's Bluto suspension fork, and SRAM's GX one by drivetrain, this bike is a versatile bull whip just chomping at the bit to take on burly trail adventures. Borealis built the Flume as an aluminum counterpart to its full carbon Crestone for a nimble ride at a fraction of the carbon cost. It boasts burly, four inch tires on 80mm rims for a solid rolling platform that remains sprightly compared to the extra fat 100mm rims found on other Borealis models. As with the Crestone, a 197mm spaced rear hub results in a surprisingly stiff rear end and perfect drivetrain alignment with the 100mm threaded bottom bracket shell. That massive rear axle also leaves clearance to handle all the mud, snow, sand, or anything else you're likely to find yourself riding through during those epic bikepacking adventures.