Ceramic Speed

BB ALPHA Mountain Bottom Bracket - English/BSA, 73mm, For 24mm/Shimano Spindle

The CeramicSpeed BB ALPHA Mountain Bottom Bracket is engineered for riders who demand lasting performance and efficiency on every ride. Built with precision and attention to detail, this bottom bracket combines ultra-smooth operation with exceptional durability to handle the harshest riding conditions. Designed for 73mm English/BSA shells and 24mm Shimano spindles, it delivers the signature low-friction performance CeramicSpeed is known for—now with improved protection and easier installation.

At the heart of the BB ALPHA are hand-built bearings featuring hardened stainless-steel races and grade-3 Silicon Nitride ceramic balls. This combination offers unmatched corrosion resistance and long-term reliability, even in wet or muddy environments. The new bearing placement and flush-fitting dust covers enhance sealing against debris, ensuring consistent performance over time.

The lighter 7075 aluminum cups and simplified spacer system reduce weight by 10% compared to previous generations, while making setup faster and more straightforward. Every unit is hand-assembled in Denmark and backed by a lifetime warranty, underscoring its commitment to quality and endurance.

• Designed for 73mm English/BSA bottom bracket shells and 24mm Shimano spindles
• Hand-built bearings with hardened stainless-steel races and grade-3 Silicon Nitride ceramic balls
• Custom-engineered light contact seals balance efficiency with superior protection
• Improved dust cover design keeps debris out and performance consistent
• Redesigned internal race supports better preload handling
• Lighter 7075 aluminum cups and simplified spacer tube for easier installation
• 10% weight reduction over previous CeramicSpeed models
• Handbuilt in Denmark and backed by a lifetime warranty