XM 1700 SPLINE® premium aluminium All Mountain wheel: optimised for versatile use. The best aluminium All Mountain wheels in the world. Full stop. That is why we designed the XM 1700 SPLINE. It's up to you to decide whether it's true. Either way, you'll have everything you need to become king of the mountain: lightweight, robust welded rims, perfect tubeless compatibility for maximum grip and puncture resistance, and our ultra-reliable hubs with RATCHET freehub body and 36-tooth toothed ratchet ring. With the XM 1700 SPLINE, your All Mountain adventures will know no limits.