A bottom bracket built to outlast your frame, the BB ALPHA features hardened stainless-steel races hand-built with grade-3 Silicon Nitride ceramic balls, custom-engineered seals, and precision dust covers. This design delivers up to 500% better moisture protection while still providing ultra-low friction performance. The internal ball bearing race has been redesigned to provide additional support, allowing the bearing to better handle pre-load. Custom-made light contact seals with stainless steel covering the backside strike the perfect balance between efficiency and protection while offering the trademark low-friction CeramicSpeed performance. Inside the BB ALPHA, the bearings have been moved further out in the cup, allowing the incredibly stiff POM plastic dust covers to sit flush with the outer edge of the cup. This makes it increasingly difficult for debris to penetrate the dust cover and contaminate the bearing. The simplified spacer tube design and lighter 7075 aluminum cups ensure quick installation and a 10% weight reduction over previous generations. All CeramicSpeed BB ALPHA models are handbuilt in Denmark and backed by a lifetime warranty.

Bottom Bracket Shell I.D.	41
BB/Frame Interface	BB92
BB Shell Width (mm)	92
Weight	76, 79
Spindle Interface Type	RaceFace EXI, SRAM DUB
Defined Color	Black
Spindle Interface	Spindle Interface