The Park Tool CT-4 Master Chain Tool installing chain rivet, click to enlarge

Item # CT-4

(discontinued) / Tools / Chain

Master Chain Tool

The CT-4 has been discontinued and replaced by the CT-4.2.

Specially designed to work with the tight tolerances and narrow profile of 10-speed chains and most high quality derailleur chains. The CT-4 is a powerful, precise tool designed to quickly and accurately remove and install chain pins. Without a doubt the most accurate chain tool we’ve ever built.

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CT-4 Features

  • Integrated Link Pocket to ensure precise alignment during use
  • Replaceable, rotating pin
  • Perfectly contoured cushioned handles
  • Precisely machined investment cast body and components

Note: The CT-4 is NOT compatible with Wippermann™ chains.

Support Articles


Parts & Accessories


Replacement Parts


Replacement Chain Tool Pin Kit