XM 1700 SPLINE® premium aluminium All Mountain wheel: optimised for versatile use. The best aluminium All Mountain wheels in the world. Full stop. That's what we set out to achieve when we designed the XM 1700 SPLINE. It's up to you to judge whether we've pulled it off. Either way, you'll have everything you need to become king of the mountain: lightweight, robust welded rims, excellent 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.