The SD version of SUNRinglé Duroc wheels is designed for committed mountain biking (Enduro, DH and eMTB). The SUNRinglé Duroc SD37 Pro 29 12x148 wheel has been designed to offer maximum strength and durability thanks to its wide welded aluminum rim, new SUNRinglé Super Bubba hub with ring bearings, brass spoke nipples and straight stainless steel spokes Wheelsmith.The SUNRinglé Duroc SD37 Pro 29 12x148 (rear) wheel is ready to roll thanks to the Tubeless Ready technology of its SUNRinglé Duroc rim. It features straight stainless steel spokes and aluminum nipples Wheelsmith, as well as the new SUNRinglé Super Bubba hub.The new SUNRinglé Super Bubba hub features Clock'D double-ring ratchet technology. This technology allows the rider to easily modify the degree of wheel engagement, from 8° for intensive use in eMTB or DH, to 4° ultra rapide for more technical riding.To ensure maximum strength and solidity, the SUNRinglé Super Bubba hub body is forged and machined from lightweight 6061......