ceramicspeed-pf4630-bottom-bracket-pf30-bbright-386evo-68-86mm-30mm-spindle-coated-bearings-silver
ceramicspeed-pf4630-bottom-bracket-pf30-bbright-386evo-68-86mm-30mm-spindle-coated-bearings-silver, The CeramicSpeed PF30 bottom bracket offers bearings with extremely low friction, improved power transfer, and a service life that far exceeds traditional steel bearings.