With the edition of the 148mm rear and 110mm front axle widths, the Roval Traverse Fattie 650b 148 mountain bike wheels went from nimble to downright stiff, traction machines. The reason is behind this simple: Aside from a lightweight, bombproof E5 alloy construction, by combining a wide, 29mm rim with wider hub flanges, these wheels dramatically increase stiffness, stability, and traction. You see, the extra width allows for more tire volume, which means more suppleness in the ride quality. And not only this, but the ample width also better supports the tire, meaning that you'll experience less "burping" when riding tubeless. These aren't just one-trick ponies, however. At the front hub, you'll get a 15x110mm thru-axle (end cap options included), and at the rear, the hub features DT Swiss internals for lightening-fast engagmenet and acceleration. And to top everything off, these wheels are hand-built to ensure the perfect tension and a long lifespan. Please note that the 148 version is exclusively designed for use with bikes designed with 110x15mm front axle and 148mm rear axle standards.