The best alloy all mountain wheels there are. Period. That is what we designed the XM 1501 SPLINE ONE wheels to be. Whether it's actually the case is up to you to decide. But we have given them everything needed to dominate the mountain. Tubeless ready, light and tough rims made from custom alloy, perfect tubeless compatibility for grip and puncture resistance as well as our Ratchet System hubs. The punch and reliability of these components are offered in a range of rim widths, so you can discover what the best alloy wheels feel like on your own all mountain adventures.