Mavic's Crossmax ST 29s are light, fast and rugged wheels perfect for epic rides, racing and serious singletrack. For maximum strength and lightness they boast Mavic's welded Maxtal aluminum rims that tackle the steep ups and technical downs with equal aplomb. To boost strength and keep the weight as low as possible, Mavic specs their straight-pull Zicral aluminum spokes and nipples. Plus, these sweet wheels sport Mavic's efficient QRM+ hubs with serviceable, durable sealed-cartridge bearings for easy maintenance and reliability. What's more, they're UST-compatible for easy, reliable tubeless tire set up.