The shimano xtr m9000 xc 29 15mm tubular front wheel is the ultimate in reliable tubular race disc wheels from the ultimate shimano mtb groupset xtr wheels are engineered to perform in the most demanding conditions whilst still being light this wheel has a tubular compatible carbon 26mm rim with 28 butted 20 15 20mm stainless steel spokes the hub has a forged then anodized alloy hub shell for maximum strength and long lasting good looks the hub uses angular contact bearings designed to