$18.99
Decision guidance
Ideal for cyclists using 5- to 12-speed derailleur chains who want a reliable, easy-to-use tool to determine the right time to replace their chain.
Choose the Park Tool CC-3.2 for its precise, easy-to-read measurements and compatibility with most common derailleur chains, helping you avoid costly drivetrain damage.
At a glance
The Park Tool CC-3.2 Chain Checker is a go/no-go gauge that precisely indicates when a chain reaches 0.5% and 0.75% wear. This helps prevent excessive wear to your derailleur and rear cogs by signaling the optimal time to replace your chain.
Designed for use with most derailleur chains ranging from 5 to 12 speeds, the CC-3.2 features permanent measurement markings to ensure long-term accuracy. Note that SRAM flattop and SRAM T-Type 12-speed chains require the CC-4 model.
| Compatible Chain Speeds | 5 to 12-speed derailleur chains Use CC-4 for SRAM flattop and SRAM T-Type 12-speed chains |
|---|---|
| Wear Replacement Thresholds | 0.75% for 5-10 speed, 0.5% for 11-12 speed chains Replace chain at or just before these wear percentages |
It is compatible with most derailleur chains from 5 to 12 speeds, except SRAM flattop and SRAM T-Type 12-speed chains which require the CC-4 model.
Replace 5- to 10-speed chains at or just before 0.75% wear, and 11- to 12-speed chains at or just before 0.5% wear.
It measures chain wear percentage to indicate when the chain has stretched and needs replacement to protect drivetrain components.
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