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. FEATURES: Allows you to install Shimano and other 24mm diameter thru-axle cranks into a T47 shell Compatible with 86mm wide frames, and also compatible with TREK T47 85.5mm wide frames Grade 3 Silicon Nitride balls with hardened steel races Reinforced polyamide cage and non-contact seals Hand built in Denmark 4 year warranty SPECS: Spindle Interface Type: Shimano Hollowtech II BB Shell Width (mm): 86 Bottom Bracket Shell I.D.: 47 BB/Frame Interface: T47