Simply put, KOM Tough rims were built for bashing. We designed them to overcome everything in their unforgiving path. KOM Tough rims are extruded from top-tier 6069 aluminum alloy for unbeatable durability at a reasonable weight, while Dual I-Beam supports further increase strength and lateral stiffness for the world’s most aggressive riders. WTB's unique Solid Strip integration also ensure they'll be the easiest to mount and most reliable tubeless rims you'll ever owned. KOM Tough has been proven on the toughest tracks of the Enduro World Series, depended on for daily trail rides, and trusted while bikepacking in remote regions of the world.