The CeramicSpeed Race Bottom Bracket is a reliable and efficient way to keep your pedaling fast and smooth. This version is made for Threaded frames frame shells like Specialized. It connects to your crank with a SRAM DUB style spindle. This is the coated version which is more efficient and durable than ever. The CeramicSpeed Race Bottom Bracket is a simple and reliable choice for riders to feel great as they pedal.