Built for bashing whether on a gravity shred sled or fully loaded bikepacking rig. KOM Tough rims are extruded from top-tier AL 6069 alloy to provide utmost durability at a reasonable weight. WTB’s I-Beam construction has evolved to further reinforce the rim with dual support beams that provide increased strength and stiffness for the world’s most aggressive riders. 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 KOM Tough rims provide a burly rim for every usage and style of riding.