SD BB86/92 Threaded Lock Bottom Bracket – 24mm

The SD BB86/92 Threaded Lock Bottom Bracket is designed specifically for BMX race applications using 24mm spindle cranksets. Utilizing a threaded lock system, this bottom bracket improves bearing alignment and eliminates many of the common issues associated with traditional press-fit systems, including creaking, movement, and premature bearing wear.

By mechanically locking both sides of the bottom bracket together inside the frame shell, the system maintains precise alignment under heavy sprint loads, resulting in smoother rotation, improved power transfer, and increased long-term durability.

Why Choose Threaded Lock?
Unlike conventional press-fit bottom brackets, the threaded lock system keeps both bearing cups perfectly aligned during hard pedaling and sprint efforts. This reduces flex, minimizes wear, improves drivetrain efficiency, and significantly lowers the chances of creaking under load.

Features:

• Threaded lock design for improved frame alignment
• Eliminates creaking commonly found in traditional press-fit systems
• Smooth and consistent bearing performance
• Improved drivetrain stiffness and power transfer
• Durable construction designed for BMX racing
• Increased long-term bearing life and reliability

Specifications:

• Bottom Bracket Style:
  • BB86 / BB92
• Type:
  • Standard
• Spindle Compatibility:
  • 24mm
• Mounting:
  • Threaded Lock System
• Brand:
  • SD

Compatibility:

• Fits BB86 and BB92 frame shells
• 41mm internal diameter frame shell
• Compatible with 24mm spindle cranksets including:
  • Shimano
  • Box
  • Other compatible 24mm systems