Ceramic Speed

BB ALPHA Mountain Bottom Bracket - PF30, 73mm, For SRAM DUB Spindle

CeramicSpeed BB ALPHA Mountain Bottom Bracket – built to deliver unmatched durability and smoothness for riders who demand precision performance on every trail. Designed for PF30 73mm shells and SRAM DUB spindles, this bottom bracket combines advanced materials, refined sealing, and weight-saving design to outlast and outperform.

Each BB ALPHA is hand-built in Denmark with hardened stainless-steel bearing races and grade-3 Silicon Nitride ceramic balls for ultra-low friction and exceptional corrosion resistance. The redesigned bearing placement and precision-fit dust covers provide superior protection against dirt and moisture—up to 500% better than previous generations—while maintaining the efficiency CeramicSpeed is known for.

The 7075 aluminum cups reduce overall weight and simplify installation, and the new internal race design improves load handling for consistent, long-term performance. Whether racing, training, or exploring rugged terrain, the BB ALPHA keeps your drivetrain spinning effortlessly with minimal maintenance.

• Compatible with PF30 73mm shells and SRAM DUB spindles
• Hand-built with hardened stainless-steel races and grade-3 Silicon Nitride ceramic balls
• Custom light-contact seals and precision dust covers provide up to 500% better moisture protection
• Redesigned internal race supports pre-load for smoother operation
• Lighter 7075 aluminum cups reduce weight by 10% and simplify installation
• Hand-built in Denmark and backed by a lifetime warranty