BKC-0858 - TorqTite, hybrid ceramic, XD-15, angular contact bearing, bottom bracket for BBRight frames and SRAM DUB/29 mm cranksets - An Enduro Bearings exclusive, our BB Pro XD-15 features 15-degree XD-15 angular contact cartridge bearings pressed into precisely machined aluminium cups that screw directly into the bottom bracket shell. Using the same XD-15 steel as our XD-15 Corsa bearing, Enduro XD-15 Pro bearings provide a sealed 15-degree angular contact bearing in a standard-sized cartridge. The XD-15 Pro bearings feature deep groove raceways to accommodate maximum size grade 5 silicon nitride ceramic balls for increased contact area, improved performance, and longevity. Enduro XD-15 cranksets are manufactured to the highest standards in the Enduro Bearings production facility in California, USA. Enduro XD-15 bearings combine cryogenically treated nitrogen steel races that are corrosion resistant with grade 5 silicon nitride ceramic balls in an exclusive process resulting in the u...