ceramicspeed-bsa-road-bottom-bracket-coated-english-thread-68mm-sram-gxp-black
ceramicspeed-bsa-road-bottom-bracket-coated-english-thread-68mm-sram-gxp-black, The CeramicSpeed BSA (English) bottom bracket offers bearings with extremely low friction, improved power transfer, and a service life that far exceeds traditional steel bearings.