CeramicSpeed Shimano HT II Coated Steel Bearing Races T47 73mm Bottom Bracket

The CeramicSpeed T47/73 bottom bracket offers bearings with extremely low friction, improved power transfer, and a service life that far exceeds traditional steel bearings.Features-Grade 3 Silicon Nitride balls-Coated races increase bearing service life by increasing hardness of race and reducing corrosion-Reinforced polyamide cage and non-contact seals-Hand built in Denmark-CeramicSpeed products with coated bearings include a 6-year warrantyItem Specifications-BB Shell Width (mm):73-BB/Frame Interface:T47-Bottom Bracket Shell I.D.:47-Defined Color:Black-Spindle Interface Type:Shimano Hollowtech II