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 24 mm axle crank from Shimano or other brands with a press-fit 42 mm bore that is 68 mm wide commonly referred to as BB30 by selecting this high quality bottom bracket from CeramicSpeed.In the box: BB ALPHA for BB30 Shimano MTB. UFO Long Life Grease 5 ml. Decal. Discipline Mountain SKU 115554 Weight 221 g BB Type BB30 68mm Crank Diameter 24.0 mm
