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. Precisely pair a SRAM DUB crankset with 28.99 mm axle with a pressfit 41mm bore that is 92mm wide, commonly referred to as BB92 by selecting this high quality bottom bracket from CeramicSpeed. Specifications:- Net weight: 76.0 g- Gross Weight: 202 g- BB Type: BB92- Crank Diameter: 28.99- Crank Brand: SRAMIn the box:- BB ALPHA for BB92 SRAM DUB MTB- UFO Long Life Grease 5 ml- Decal