ceramicspeed-bsa29-mtb-bottom-bracket-bsa-english-thread-sram-dub-mtb-black
ceramicspeed-bsa29-mtb-bottom-bracket-bsa-english-thread-sram-dub-mtb-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.