The Park Tool CT-5 Mini Chain Tool installing chain rivet, click to enlarge

Item # CT-5

/ Tools / Chain

Mini Chain Tool

The CT-5 Chain Tool performs like a shop-quality tool, in a lightweight compact size that easily fits in a saddle bag or mobile mechanic's tool roll. The CT-5 removes and installs pins on all 5-to-12-speed derailleur chains, including newer SRAM® 12-speed designs. The integrated loosening shelf is useful for adjusting tight links on older style chains.

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CT-5 Features

  • Compatible with all 5-speed to 12-speed bicycle chains* including SRAM® T-Type, SRAM® Flattop™, and Shimano® XTR® 12-speed
  • Compatible with 3/32" single-speed chains
  • Compatible with many 1/8" single-speed chains — see the CT-3.3 for guaranteed compatibility with all single-speed chains
  • Not compatible with 3/16" or half-link single-speed chains
  • Replaceable pin (part # CTP)
  • Weight: 77g (2.7 oz.)
  • Dimensions: 60 x 55 x 15 mm (2.4" x 2.2" 0.6")

*The CT-5 will install and remove, but not peen, Campagnolo® 11 and 12-speed chain rivets.

Use and Care

  • Before use, check that the pin is tight in the handle.
  • Always place the chain onto the lower shelf when driving out a chain rivet.
  • As you drive the chain tool, ensure the pin is driving in a straight line, with the pin in the center of the rivet.
  • Periodically grease the threads of the handle for optimal performance and longevity.

Support Articles


Parts & Accessories


Replacement Parts


Replacement Chain Tool Pins

CT-5 Mini Chain Brute Chain Tool