Real-world riders need wheels that roll fast, and are durable enough to sustain years of abuse, without costing more than the rest of the bike. SUNRinglé Düroc SD rims do just that. The Düroc SD series is the result of real-world EWS racing and good ol' fashioned downhill thrash testing. Built to last with welded seams, 28 or 32 hole drillings, 27.5" or 29", and available in 37mm and 42mm widths, there is a tubeless-ready Düroc SD rim to suit your wheel building needs.