The CeramicSpeed T47/86 bottom bracket offers bearings with extremely low friction, improved power transfer, and a service life that far exceeds traditional steel bearings. Allows you to install Campagnolo and other 25mm diameter thru-axle cranks into a T47 shell Compatible with 86mm wide frames Grade 3 Silicon Nitride balls with coated and hardened steel races 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 Lifetime Warranty Specifications BB Shell Width (mm)86BB/Frame InterfaceT47Bottom Bracket Shell I.D.47Defined ColorBlackSpindle Interface TypeCampagnolo Ultra-Torque