A bottom bracket built to outlast your frame. BB ALPHA features hardened stainless-steel races hand-built with grade-3 Silicon Nitride ceramic balls, custom-engineered seals and precision dust covers, delivering up to 500% better moisture protection, while still providing ultra-low friction performance. The simplified spacer tube design and lighter cups ensure quick installation and a 10% weight reduction over previous generations. All CeramicSpeed BB ALPHA models are backed by a lifetime warranty. Precisely pair a SRAM DUB crankset with 28.99 mm axle with a pressfit 41mm bore that is 86mm wide, commonly referred to as BB86 by selecting this high quality bottom bracket from CeramicSpeed. In the box? BB ALPHA for BB86 SRAM DUB Gravel UFO Long Life Grease 5 ml Decal