CeramicSpeed BB ALPHA BB86 Shimano

A durable, low-friction bottom bracket for pairing Shimano and other 24 mm axle cranks with BB86 frames (41 mm press-fit bore, 86 mm shell width).

• Hardened stainless-steel races
• Grade 3 silicon nitride ceramic balls
• Custom-engineered seals and precision dust covers
• Up to 500% improved moisture protection
• Simplified spacer tube and lighter cups for quick installation
• Approximately 10% lighter than the previous generation
• Backed by CeramicSpeed’s lifetime warranty