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Eliminate poor shifting and uneven drivetrain wear

The Park Tool Chain Checker allows you to quickly assess the wear and stretch of any chain to help maintain a healthy drivetrain. Just insert the CC-2’s pins into two links, secure the swing arm gauge, and then check the gauge window for an accurate reading. The CC-2 is 10- and 11-speed compatible.

  • 10- and 11-speed compatible
  • Determine the wear and stretch of any chain

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Park Tool Chain Checker - CC-2

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Here's what others have to say...

5 5

Cheap & Easy To Use

I got caught having to replace both my chain and cassette a few weeks ago and won't let that happen again with this handy tool. It's cheap and easy to use. Make sure to initially check your chain as a baseline and to build familiarity with the checker.

5 5

Must own

  • Familiarity: I've put it through the wringer

way cheaper than guessing. We use this tool in here in the Retail Bike Shop in salt lake city.

5 5

easy to use

  • Familiarity: I've used it several times

perfect for your own mantaince of the bike, absolutely necessary

5 5

Cheaper than a new cassette

If you've ever made the mistake of running your chain too long, and needing to replace your cassette as a result, then spending less than $30 on a chain checker is money well spent. Just need to remember to check your your chain regularly.

4 5


Checked a new chain against an old one with this.
Dead on accurate. A bit OCD to own but worth it.