Cassette lockring tool Park Tool BBT-69.4 44mm 07001281

Precision CNC machined aluminum tool for installing and removing selected components with 16-spline tool fittings, including bottom brackets, center-lock disc brakes, and locking rings on electric bicycles. Manufactured by Park Tool, anodized for easy identification, and featuring a 3/8" drive compatible with ratchets/torque wrenches.

The BBT-69.4 includes integrated threads for full compatibility with the Park Tool BBT-RS bottom bracket tool holder system (sold separately). The BBT-RS uses an adjustable spring tension system to apply consistent, adjustable pressure on the tool, ensuring full engagement with the tool fitting and preventing slipping.

Fits 16-spline tool fittings with a major diameter (outside splines) of 44–45 mm and a minor diameter (inside splines) of 42.7 mm, including:
Shimano BB80, BB5700, XT BB70, BB51
Center-lock disc brake rotor locking rings
Bafang BBSH, BBS02 motor locking rings for bottom brackets
3/8" drive mount