More informationShimano cranks fit BB86 frames when you have the CeramicSpeed bottom bracket installed. The kit consists of two cups that are pressed on both sides of the central opening. The cups come with CeramicSpeed bearings installed. There are two versions.The first is our standard low resistance, long life bearing, with hardened steel races and our super round CeramicSpeed Balls. The second version is our coated bearing, which uses those same CeramicSpeed balls installed in hardened steel coated races for longer life and less rolling resistance.