Ceramic Speed Bottom Bracket Long-running performance Ceramic Speed is well-known in the cycling industry for making some of the best ceramic bearing components available, keeping your bike spinning more efficiently and for longer than ever before. The Ceramic Speed Bottom Bracket is designed to reduce wasted watts, increase wear life compared to standard BBs, and improve power transfer-for top-level pedaling efficiency and durability. All of the Ceramic Speed Bottom Brackets use ceramic ball bearings, running on hardened steel bearing races. The available Coated option features a durable, hard coating on the bearing races for even less drag, and longer bearing life (plus a lifetime warranty). Less drag, longer-lasting, what's not to love?Features Lightweight construction at only 93 grams (BSA/24mm configuration)Handbuilt ceramic ball bearing design with hardened steel bearing races for reduced friction and a long wear life Available with optional coated, hardened steel races for longer life, reduced corrosion, and less drag than non-coated races (plus a lifetime warranty)SPECIFICATIONSBearing Type Ceramic Bearing Race Type Hardened Steel, or Coated Hardened Steel Available Bottom Bracket Types BSA, BB92, BSA30, BSA Road DUB, BSA 68mm Weight93 grams | Ceramicspeed | Ceramic Speed Bottom Brackets Bb92 Sram Dub Mtb