The Park Tool BBT-35-36 Bottom Bracket Tool, click to enlarge
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Item # BBT-35-36

/ Tools / Crank & Bottom Bracket

Bottom Bracket Tool — 36-Notch

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 36-notch tool fittings, including Praxis Works® M35. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive.

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BBT-35-36 Features

  • Fits 36-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 51–53 mm and a minor diameter (inside of notches) of 50.7 mm, including Box® Two Oversized M35 and Praxis Works® M35
  • 3/8" drive fitting

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

Product Fitment

Below is a filterable table of bottom bracket models the BBT-35-36 is compatible with. For a full list of tool compatibility, see our Bottom Bracket Tool Finder.

Box® Components Thread-Together Two™ Oversized M35
Praxis Works® Threaded & Thread-Together M35

Parts & Accessories


Bottom Bracket Tool Retaining System

BBT-35-36 Bottom Bracket Tool - 36-Notch 51.7mm