Park Tool BBT-49.3 Bottom Bracket Tool - 16 Notch - 39mm

A precision CNC-machined aluminium tool for the installation and removal of select threaded bottom brackets with 16-notch tool fittings, including Shimano XTR BB93, Dura-Ace BB9000, and Token bottom brackets. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8 inch drive.

The BBT-49.3 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 39-40mm and a minor diameter (inside of notches) of 37.6mm including:
- Shimano XTR BB93
- Shimano Dura-Ace BB9000
- Token

Also fits chainring lockrings on Shimano STEPS square spindle E-bike systems including:
- E6000
- E6002
- E6050

- Replacement for Shimano TL-FC38 tool
- 3/8 inch drive fitting