Measure chain wear quickly and accurately with the Park Tool CC-4.2 Chain Checker
What Our Gearhead® Experts Are Saying:
“The CC-4.2 is a no-brainer for anyone who’s serious about bike maintenance. It’s easy to use and gives precise readings, helping prevent bigger issues with the drivetrain. I love that it works with all kinds of chains, so it’s great for any bike I’m working on.”
When it comes to keeping our bikes running smoothly, chain wear is something we never overlook. The Park Tool CC-4.2 Chain Checker takes the hassle out of this crucial maintenance task by providing precise, easy-to-read measurements. This laser-cut tool engages the chain at three points, measuring across a longer section for more accurate readings. Compatible with 5- to 13-speed chains, it’s versatile enough for road, mountain, or gravel bikes, and it clearly shows when your chain hits the 0.5%, 0.75%, or 1.0% wear thresholds—letting you know exactly when it’s time for a replacement. Keeping your drivetrain in top condition has never been easier.
Details
- Drop-in chain wear gauge for precise, easy maintenance
- Measures wear for 5- to 13-speed chains, including SRAM T-Type and Shimano XTR
- Indicates wear at 0.5%, 0.75%, and 1.0%—ideal for timing chain replacement
- Works on single-speed and derailleur chains
- Laser-cut tool ensures accuracy over the long haul
- Item #PARE04P
- Compatibility
- 5 - 13-speed derailleur chains
- Activity
- bike maintenance
- Manufacturer Warranty
- lifetime
Reviews
Q&A
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Overall Rating
5 based on 1 ratings
Review Summary
Fits True To Size
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Selecting an option will reload the available reviews on the pageApril 24, 2025
Simple and accurate
- Familiarity:
- I've put it through the wringer
Very simple to use, high accuracy. Must have in your bike shop. Made in the USA.
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