T47 BOTTOM BRACKET TOOL 12 NOTCH ALUMINIUM PARK TOOL BBT-47-12

The Park Tool BBT-47-12 is the 12-notch aluminium T47 bottom bracket tool, designed to install and remove T47 threaded bottom brackets and Chris King ThreadFit 30. It is the light, compact version of Park Tool's T47 family: same 50-53 mm 12-notch fitting, but an aluminium body with a single 3/8" square drive, ideal if you always work with a ratchet and torque wrench.

It is CNC-machined from solid aluminium in Park Tool's own facility and anodized for instant identification. The notches have a major diameter of 50-53 mm and a minor diameter of 48.2 mm, for full engagement on the large-diameter cups typical of the T47 standard. Compared with the BBT-147-12, which is machined from 4140 steel and also offers a 1" hex and 36 mm flats for very tight cups, the BBT-47-12 focuses on lightness and precise torque: it is the right choice for installation and routine service, while the steel version is designed for the toughest removals.

Which T47 bottom brackets the BBT-47-12 fits

• BBInfinite T47, external non-drive side and internal version
• Chris King ThreadFit 30 and ThreadFit T47 (30i, 24i, 30x, 24x)
• Hambini T47
• Rotor T47 External 30 mm and T47 Internal 30 mm
• Rotor thread-together bottom brackets for BB30, PF30, BB386EVO and BBright (non-drive side)

Why choose Park Tool BBT-47-12

• Precise 12-notch profile that won't mark aluminium cups
• CNC-machined aluminium: light and easy to handle
• 3/8" drive for ratchet and torque wrench, to tighten to the correct torque
• Anodized finish to tell it apart from other BBT tools at a glance
• Works with the BBT-RS retaining system, sold separately, which keeps the tool engaged with the cup

The tool is not designed for impact drivers or other power tools. For anyone who regularly builds and services T47 road, gravel and MTB frames, the Park Tool BBT-47-12 aluminium 12-notch T47 bottom bracket tool is a precise, lightweight tool to keep within reach.