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: Save watts and ride faster with guaranteed lowest friction, optimized power transfer, and longest product lifetime BB86 bottom bracket standard, 86.5mm shell width and 41mm opening diameter Standard Bearings: low drag with hardened steel races and ceramic ball bearings Included: 2 cups, 2 dust covers with built-in spacers, spacer tube, 10mm syringe of All Round Grease, and sticker sheet Specifications: Frame Interface: BB86 Spindle Interface: SRAM DUB (28.99mm) Bottom Bracket Shell ID: 41 Shell Width: 86mm Color: Black Weight: -