ceramicspeed-pf29-mtb-bottom-bracket-73mm-sram-dub-mtb-coated-races-black
ceramicspeed-pf29-mtb-bottom-bracket-73mm-sram-dub-mtb-coated-races-black, The CeramicSpeed PF30 bottom bracket offers bearings with extremely low friction, improved power transfer, and a service life that far exceeds traditional steel bearings.