Borealis Flume GX Crimson / Gold 27.5 Mulefut

The Borealis Flume is an expedition-ready fat bike that is built to handle any adventure. With a lightweight 6000-series aluminum frame, it features a SRAM Eagle GX 12-Speed drivetrain, SRAM Level T brakes, and carbon handlebars and seat post. The durable Sun Ringle Mulefüt rims and your choice of tires provide maximum control and responsiveness, even in the toughest conditions. With clearance for tires up to 26×5” and 27.5×4.5”, and compatibility with 100-120mm of suspension travel, this fat bike is perfect for tackling mountains, glaciers, and deserts. With 2-3 bottle cage mounts, rear rack mounts, and Lizard Skin protectors, it’s also equipped with all the extras you need for your next adventure.

We do offer different wheel sets and tires options on these builds.

Contact us today to build your custom Flume!