Park Tool BBT-27.3 — Bottom Bracket Tool (16-Notch, 49mm OD)

The BBT-27.3 is a precision CNC-machined aluminium tool designed for the installation and removal of select threaded bottom brackets featuring 16-notch tool fittings. Its durable construction and anodized finish make it easy to identify, while the 3/8" drive compatibility allows use with ratchets or torque wrenches for precise and controlled adjustments.

This tool is ideal for professional mechanics and home enthusiasts working with modern bottom bracket systems, providing a secure fit without damaging threads or cups.

Features

• 16-Notch Design: Fits bottom brackets with major diameter (outside of notches) 48–50 mm and minor diameter 46.4 mm.

• Precision CNC Machining: Aluminium construction ensures accuracy and long-lasting performance.

• Anodized Finish: Easy identification in the workshop.

• Ratchet/Torque Wrench Compatible: Works with 3/8" drive tools for controlled installation and removal.

• Compatibility: Fits FSA® MegaEvo®, Wheels Manufacturing™ T47, and PF30 bottom brackets.

• Limitations: Not compatible with Hope™ BSA30; not for use with impact drivers or power tools.