Technically, the tubeless-compatible 650b Road and Gravel Disc Brake Wheelset is a mountain bike wheelset. We say "technically," because the latest breed of all-terrain bikes mean that 650b—or road plus, MX, etc.—are built to accommodate smaller diameter rims and seat big tires. Whether you're looking for a plush ride across hundreds of miles of bikepacking or you want to ride up a canyon and then ride up the singletrack at the top, FSA's proven alloy construction and the added tire clearance of 27.5in wheels will empower you.