Park Tool Bottom Bracket Tool

BBT-18:

The BBT-18 is a heavy duty investment-cast tool for removing and installing components with an eight-notch tool fitting, including select cartridge bottom brackets, as well as chainring lockrings on some e-bike drivetrains.

Installs and removes the following components with eight-notch tool fittings:

• Shimano® Octalink® drive-side bottom bracket cups with external notches
• ISIS Drive bottom bracket cups including Truvativ® and Bontrager®
• Front chainring lockring for Bosch® Gen 3, Gen 4, and Gen 5 e-bike systems
• Front chainring lockring for Specialized® Levo Brose e-bike systems

Tool specifications:

• 8 notches with a nominal outside diameter of 43.4 mm
• The hole in the center of the casting is 22.5 mm, and will not fit over 30 mm spindles
• Features 36 mm wrench flats

BBT-19:

Bicycle bottom brackets occasionally require removal for service, replacement, or upgrading. The Park Tool BBT-9 is used to remove and install select threaded bottom brackets with 16-notch tool fittings, including Shimano®, SRAM® GXP, Chris King®, Campagnolo®, and many others. This tool fitting is also found on some disc brake rotor lockrings.

Additionally, the BBT-9 includes a tool that removes and installation of 8-point Shimano Hollowtech II crank arm adjusting caps. The long, plated-steel handle offers good leverage for high-torque applications and is vinyl-dipped for comfort.

Fits 16-notch tool fittings with a major diameter (outside of notches) of 44–45 mm and a minor diameter (inside of notches) of 42.7 mm, including:

• Shimano® BB80, BB5700, XT® BB70, BB51, and previous external bearing threaded cups
• Threaded bottom bracket cups from Campagnolo®, Chris King®, FSA® MegaExo®, Hope™, SRAM®/Truvativ® GXP®, Race Face® X-type, Surly®, Wheels®, Fulcrum®, and others
• 16-notch disc brake rotor lockrings
• 16-notch Bafang® BBSH, BBS02 mid-drive motor lockrings

Fits 8-point tool fittings on Shimano® Hollowtech II® crank arm caps:

• Equivalent to Shimano® TL-FC16 or TL-FC18 tool

BBT-79.3:

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 12-notch tool fittings, including SRAM® BSA DUB®, Race Face® Cinch®, Rotor® BSA30, and others. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive.

The BBT-79.3 features integrated threads for full compatibility with the Park Tool BBT-RS Bottom Bracket Tool Retaining System (sold separately). The BBT-RS uses an adjustable spring-based tension system to apply consistent, adjustable pressure to the tool, ensuring full engagement with the tool fitting and preventing slippage.

Fits 12-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 45–47 mm and a minor diameter (inside of notches) of 44 mm, including:

• SRAM® BSA DUB®
• Race Face® Cinch®
• Rotor® BSA30
• Zipp® Vuma™
• Hawk Racing™ BB3086™
• and more

Not designed for use with impact drivers or other power tools.

BBT-27.3

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 16-notch tool fittings, including FSA® MegaEvo®, Wheels Manufacturing™ T47, & Wheels Manufacturing™ PF30. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive.

Fits 16-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 48-50 mm and a minor diameter (inside of notches) of ~46.1 mm, including:

• FSA® MegaEvo®
• Wheels Manufacturing™ T47
• Wheels Manufacturing™ PF30

NOTE: The BBT-27.3 does not fit Hope™ BSA30.

Not designed for use with impact drivers or other power tools.

BBT-35-12:

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 12-notch tool fittings, including Praxis Works® M30. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive.

• Fits 12-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 48–50 mm and a minor diameter (inside of notches) of 46.3 mm, including Praxis Works® M30
• 3/8" drive fitting

Not designed for use with impact drivers or other power tools.

BBT-59.3:

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 16-notch tool fittings, including Shimano® Ultegra® BBR60 and Deore XT® MT-800 bottom brackets. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive.

The BBT-59.3 features integrated threads for full compatibility with the Park Tool BBT-RS Bottom Bracket Tool Retaining System (sold separately). The BBT-RS uses an adjustable spring-based tension system to apply consistent, adjustable pressure to the tool, ensuring full engagement with the tool fitting and preventing slippage.

Fits 16-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 41–42 mm and a minor diameter (inside of notches) of 39 mm, including:

• Shimano® Ultegra® BBR60
• Shimano® Deore XT® MT-800

Not designed for use with impact drivers or other power tools.