The all-new M6 is ENVE's flagship, every day, any-trail, wheel developed for all the bikes, riders, and trails between cross-country and gravity racing disciplines. Like all new M Series wheels, the M6's rims feature unique shapes and constructions front and back. To accommodate the modern trail rider's preference for 2.4-2.5" wide tires, the M6's front rim features an internal rim width of 32mm, and the rear is 29mm. The rear rim has been optimized for power transmission, tracking, and durability Wide Hookless Bead - Trail optimized anti-pinch flat protection Innerdrive 80pt engagement hubs with CX Ray straight pull spokes Brass external nipples with Nyloc threaded locking insert Built for Cross-Country, Down-Country, Trail Applications Approved for E-bike usage - Up to 75nm Backed by ENVE's 5-year Factory Warranty and Incidental Damage Protection Specifications Rear Axle 12mm Thru x 148mm