A worn bicycle chain can cause poor shifting and in time can even cause excessive wear to the derailleur and rear cogs, causing a much more expensive problem. That's why bike component manufacturers recommend chain replacement at regular wear intervals. The Park Tool CC-3.2 is a go/no-go gauge designed to accurately indicate when a chain reaches 0.5% and 0.75% wear (or "stretch"), the points at which most chain manufacturers suggest replacement. The CC-3.2 is long, accurate, and features permanent measurement markings. The CC-3.2 works on most derailleur chains* from 5 to 12-speed.
ParkTool CC-3.2 Chain Checker
- 5-to-10-speed chains: replace chain at or just before 0.75%
- 11-to-12-speed chains*: replace at or just before 0.5%
- Check with manufacturer for specific replacement instructions
-If you are not 100% satisfied with your purchase, you can return the product and we'll refund the full cost of the item minus shipping costs or exchange the product for another one, be it similar or not.
-You can return a product for up to 30 days from the date you purchased it.
-Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt.