Serious mountain bikers, this DT Swiss XR 391 rim is built for demanding cross country courses where every gram matters but durability can't be compromised. The welded construction is super strong while keeping weight down, and the bead-blasted anodized finish looks pro-level. The width is perfectly designed for running wider tires that give you better traction and control on technical XC terrain. Using custom alloys and PHR nipple interface technology, DT Swiss managed to create a rim that's simultaneously wide, lightweight, and incredibly strong - the holy trinity for competitive cycling. The 32-hole configuration works with most hub systems, making it versatile for various wheel builds. Whether you're building up a new wheelset or replacing worn rims, this XR 391 delivers the performance that serious riders expect from DT Swiss. The profile is use-specific for XC riding, optimized for the demands of modern cross country racing where technical features require robust equipment. The quality is immediately apparent when you handle these rims - they just feel premium and well-engineered. Perfect for riders who want to upgrade from stock wheels to something that can handle aggressive riding while saving weight. If you're building your dream XC machine or just want reliable rims that won't let you down when the trail gets rough, the XR 391 deserves serious consideration. DT Swiss knows how to make components that perform when it counts.