The Park Tool BBT-32C (commonly known in the workshop catalog simply as the BBT-32) is a highly compact, investment-cast steel shop tool designed for the installation and removal of 20-spline cartridge bottom brackets. It is engineered primarily as a space-saving, highly economical option for home mechanics, mimicking the spline profile of the heavier workshop Park Tool BBT-22 but substituting a 3/8" square socket drive for a streamlined profile.

Technical Specifications & Compatibility

• Spline Profile:
  Features an exact 20-tooth splined pattern with a flat tooth profile, ensuring maximum tooth engagement inside the bottom bracket cup.
• Drive Interface:
  Machined with 32mm wrench flats, allowing it to be driven externally using:
  • A standard 32mm open-end wrench
  • An adjustable crescent wrench
  • Or wrapped tightly into a heavy bench vise for maximum frame leverage.
• Oversized Center Bore:
  Includes a large, completely hollow inner clearance tunnel, enabling the tool to slide directly over oversized spindles without obstruction. Compatible with ISIS Drive and Shimano Octalink setups.
• Component Compatibility:
  Safely fits 20T bottom bracket cups from brands like Shimano, Truvativ, Race Face, and FSA. Additionally, it can double as a removal tool for specific external Race Face crankset lockrings.

This tool is a practical and efficient addition to any home mechanic's toolkit, offering professional-grade functionality in a compact and economical design.