Ceramic Speed

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

CeramicSpeed BB ALPHA Gravel Bottom Bracket delivers the durability and efficiency that serious gravel riders demand. Built around precision-engineered grade-3 Silicon Nitride ceramic bearings and hardened stainless-steel races, this bottom bracket is designed to run smoother, resist corrosion, and last longer than traditional steel options. Riders can expect ultra-low friction performance and exceptional protection from grit and moisture—ideal for harsh gravel conditions.

The BB ALPHA design moves the bearings further out in the cup to improve stiffness and load handling, while new POM dust covers sit flush with the cup edge to seal out dirt. A simplified spacer tube and 7075 aluminum cups make installation straightforward and reduce overall weight by 10% compared to previous versions. Each bottom bracket is hand-built in Denmark and backed by a lifetime warranty, offering long-term confidence with minimal maintenance.

• Ultra-low friction performance from hand-built Silicon Nitride ceramic bearings
• Enhanced moisture and debris protection with redesigned seals and flush-fitting dust covers
• Long-lasting durability thanks to hardened stainless-steel bearing races
• Quick, precise installation with simplified spacer tube design
• Lighter 7075 aluminum cups reduce weight by 10% over previous models
• Hand-built in Denmark with a lifetime warranty for lasting reliability