Light and wide—a 35mm-wide welded AM rim. Plus-size tires are great, and with the XM 521, they find their ideally matched counterpart. It offers all the support needed by the most aggressive of riders, yet it keeps the weight really low. This is important because big tires tempt you to goof around on the trails and any rider would rather spend their energy jumping off obstacles than wasting it dragging along extra weight. That's the XM 521: a rim ready to put smiles on riders' faces.
Modern welded XC rim, developed with a 25mm inner width. Modern-day XC rim: The right width to run wide tires necessary to be competitive on today's demanding Cross Country courses. The welded construction of the XR 391 and the bead-blasted, anodized finish are on par with your high-end XC ride. The use-specific profile, the custom alloy, and the use of the PHR nipple interface allow you to pair the unpairable: Wide, strong, and light.
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