CeramicSpeed BSA Threaded Bottom Bracket

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Save watts and ride faster with guaranteed lowest friction, optimized power transfer, and longest product lifetime External BSA, English threaded bottom brackets featuring anodized aluminum cups Coated: metallic layer that covers bearing races making them 75% harder than steel. Even lower friction and highly resistant to corrosion Standard: low drag with hardened steel races and ceramic ball bearings In the box: 2 threaded cups, 2 dust covers with built-in spacers, spacer tube, 10mm syringe of All Round Grease, and sticker sheet For 73mm bottom bracket English shells 29mm Spindle Show more