Acros

T47 Internal Bottom Bracket

The Acros T47 Internal Bottom Bracket is a precision threaded T47 option for riders who want a quiet, service-friendly interface with modern crank compatibility. Its internal-cup design pairs the security of threads with replaceable cartridge bearings for long-term durability and straightforward maintenance.

• T47 Threaded Interface - Helps minimize creaks compared to press-fit systems and simplifies removal during service
• Crank Compatibility Options - Available to fit SRAM DUB, Shimano Hollowtech II, or 30mm spindles for a clean match to common crank standards
• Replaceable Stainless-Steel Deep Groove Ball Bearings - Built for smooth rotation and corrosion resistance, with bearings that can be renewed instead of replacing the entire unit
• Included Chainline Spacers - Makes it easier to dial in correct crank spacing during installation
• Grease Included - Supports proper installation and ongoing maintenance for consistent performance