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Park Tool
BBT-49.2 Bottom Bracket Tool

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BBT-49.2 Bottom Bracket Tool

You've been putting off replacing that crunchy, creaking bottom bracket for a while now. Well, you have some downtime on your hands so take the opportunity to go ahead and swap it out. Add Park Tool's Bottom Bracket Tool - BBT-49.2 to your tool arsenal and you'll quickly and easily remove or install 16-notch, 39mm OD external bottom bracket cups such as Shimano's XTR BB93, Dura-Ace BB9000, and other brands like Token.

It's precision CNC machined from aluminum and features updated tooth profiles that interface better with the tool and cup to prevent rocking or marring surfaces. Park Tool anodizes and etches it for easy identification in the toolbox and its 3/8in drive fits ratchets and torque wrenches. This tool is also compatible with Shimano's STEPS square drive motor lockring.


  • Install or remove 16-notch 39mm outboard bottom bracket cups
  • Durable anodized aluminum and laser etched construction
  • Compatible with newer Shimano XTR and Dura Ace bottom brackets
  • Item #PAR007J
16-notch, 39mm OD external bottom bracket cups, 3/8in drive
Recommended Use
bike maintenance
Manufacturer Warranty
limited lifetime