A bottom bracket that lasts longer than your frame. The BB ALPHA features hardened stainless steel bearing cups that are handcrafted with grade 3 silicon nitride ceramic balls. Specially designed seals and precise dust covers provide up to 500% better protection against moisture while maintaining extremely low friction. The simplified spacer tube design and lighter bearing cups allow for quick installation and a 10% weight reduction compared to previous generations. All CeramicSpeed BB ALPHA models come with a lifetime warranty. This high-quality bottom bracket from CeramicSpeed enables the precise combination of a SRAM DUB crank with a 28.99 mm axle with a press-fit housing featuring a 41 mm bearing seat and 86 mm width, commonly known as BB86. Package includes: * BB ALPHA for BB86 SRAM DUB Road * UFO All Round Grease, 5 ml * Stickers.