CeramicSpeed BB86 Bottom Bracket Description: With an integrated dust cover for all models, a snug & secure fit that also fully protects the face of the bearing delivers exceptional performance without any sacrifices. CeramicSpeed hand-built bearings carry the load from crank to frame with un-paralleled durability & efficiency. Features: BB86 bottom bracket standard, 86.5mm shell width and 41mm opening diameter Save watts and ride faster with guaranteed lowest friction, optimized power transfer, and longest product lifetime Standard Bearings: low drag with hardened steel races and ceramic ball bearings Super round CeramicSpeed balls and hardened-steel races Hand built in Denmark Specifications: Frame Interface: BB86 Spindle Interface: 24mm Spindle Bottom Bracket Shell ID: 41 Shell Width: 86mm Color: Black Weight: -