BKC – 0896 – Torqtite, Ceramic – Hybrid, XD15, Angular Contact, Bearing Bottom Bracket for BB386 framesets and Shimano 24mm cranksets An Enduro Bearings exclusive, our XD15 Pro BBs feature XD15 15 degree Angular Contact cartridge bearings pressed into precision machined aluminum cups that simply thread directly into the BB shell. Utilizing the same XD15 steel as our XD15 Corsa bearing, Enduro XD15 Pro bearings offer a 15 degree angular contact sealed bearing in a standard – sized cartridge. XD15 Pro bearings feature deep – groove raceways allowing for maximum sized Grade 3 Silicon Nitride ceramic balls for for increased contact area and improved performance and longevity. Enduro XD15 bottom brackets are manufactured to the highest standards at the Enduro Bearings production facility in California, USA. Enduoro XD15 bearings combine corrosion – proof, cryogenically treated nitrogen steel races with Silicon Nitride Grade 3 ceramic balls in a proprietary process that results in the ultimate high performance bearing setup. Find out why Bike Radar reported the XD15 Hands down, the best bottom bracket we have ever tested. We are so sure that you will agree, that we offer an unlimited lifetime bearing and race warranty. The most impressive feature of these bearings is, unlike other bearings, they only get better with use. As the bearings wear – in, the balls actually make the races even smoother. So when compared to other ceramic – hybrid bearings on the market that claim speed and power advantages on day one, Enduro XD15 bearings not only provide the same initial advantages on day one, but will get even faster and smoother with time and use, while the other ceramic – hybrid options will only get slower. Finding the right bottom bracket solution for the ever – growing range of bicycles on the market is not always an easy task. At Enduro we currently offer over 50 different models of bottom brackets for various bottom bracket shell and crankset combinations in multiple price/performance levels. Enduro bearings offers threaded options for BSA, BSA 30, Italian and the robust T47 system. For press – fit bottom brackets we created the oft – copied, thread – together Torqtite bottom brackets as well as press – fit Delrin Cup options. We even offer flanged, double – row bearings to fit 30mm cranksets in BB86 shells!