Ceramic Speed

BB ALPHA Mountain Bottom Bracket - English/BSA, 73mm, For 30mm Spindle

The CeramicSpeed BB ALPHA Mountain Bottom Bracket is built for riders who demand smooth, efficient power transfer and long-lasting performance in all conditions. Designed for 73mm English/BSA shells and 30mm spindles, it combines advanced ceramic bearing technology with improved sealing and lightweight construction for a bottom bracket that performs as hard as you ride.

Each unit is hand-built in Denmark with grade-3 Silicon Nitride ceramic balls rolling on hardened stainless-steel races, providing ultra-low friction and exceptional durability. The redesigned bearing placement and precision dust covers enhance stiffness and protection, keeping contaminants out even in tough mountain environments. A simplified spacer tube design and 7075 aluminum cups reduce weight and make installation straightforward, while improved sealing delivers up to five times better moisture resistance than before.

• Ultra-smooth ceramic bearings reduce friction and improve power transfer for a more efficient ride.
• Enhanced moisture protection with custom-engineered seals and stainless-steel backing for lasting performance in wet or muddy conditions.
• Optimized bearing placement increases stiffness and keeps debris out with flush-fitting POM dust covers.
• Lighter 7075 aluminum cups and simplified design cut weight by 10% while simplifying installation.
• Lifetime durability from hand-built construction and corrosion-resistant materials designed to outlast your frame.

The CeramicSpeed BB ALPHA Mountain Bottom Bracket delivers the precision, protection, and performance serious mountain bikers expect from one of the most trusted names in ceramic bearing technology.