Front side of Park Tool BBT-4 Bottom Bracket Tool, click to enlarge
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Item # BBT-4

/ Tools / Crank & Bottom Bracket

Bottom Bracket Tool

The BBT-4 is designed for the installation and removal of bottom bracket cups with six-notch tool fittings, as found on many Campagnolo® cartridge bottom brackets. Vinyl-coated handle for comfort.

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BBT-4 Features

  • Fits six-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of nominally 44 mm and a minor diameter (inside of notches) of 38 mm
  • Compatible with SC-S and AC-H cartridge cups often found on sealed cartridge bicycle bottom brackets, including the following Campagnolo® groupsets: Veloce™, Xenon™, Mirage™, Daytona™ and Avanti™

Parts & Accessories


Bottom Bracket Tool Retaining System