Ceramic Speed

BB ALPHA Road Bottom Bracket - T47, 86mm, For 24mm/Shimano Spindle

The CeramicSpeed BB ALPHA Road Bottom Bracket is engineered for riders who demand the highest level of performance and longevity from their drivetrain. Built around precision T47 threading and an 86mm shell width, this bottom bracket is designed for 24mm Shimano spindles and delivers industry-leading durability and efficiency.

At the heart of the BB ALPHA are hardened stainless-steel races paired with grade-3 Silicon Nitride ceramic balls, reducing friction and extending bearing life far beyond standard options. Custom-engineered seals and precision dust covers provide up to 500% better moisture protection, ensuring consistent performance through wet rides, grit, and road grime.

A simplified spacer tube design and lightweight 7075 aluminum cups make installation straightforward while cutting 10% of the weight compared to previous generations. Bearings are positioned further outboard for enhanced stiffness and improved load handling, while the redesigned internal race supports better pre-load control. Every BB ALPHA is hand-built in Denmark to exacting standards and backed by a lifetime warranty.

• Ultra-low friction performance with hand-built ceramic bearings for smoother power transfer
• Exceptional protection from water and debris for long-term reliability
• Lightweight 7075 aluminum cups reduce weight and simplify installation
• Optimized bearing placement increases stiffness and support under load
• Hand-built quality from CeramicSpeed’s Danish facility, backed by a lifetime warranty