Park Tool Chain Checker CC-2 – Precision Chain Wear Gauge
Prevent poor shifting and uneven drivetrain wear by replacing your chain before the rear cog becomes worn. The Park Tool Chain Checker CC-2 allows you to quickly and accurately measure chain wear and stretch, ensuring optimal performance and prolonging the life of your drivetrain.
Easy to Use:
Simply insert the Chain Checker’s pins into two chain links, gently press the swing-arm gauge, and read the measurement through the clear gauge window. Within seconds, you’ll know whether your chain needs replacement.
Compatibility & Replacement Guidelines:
Single-speed chains: Replace at or just before 1% wear.
9- and 10-speed derailleur chains: Replace at or just before 0.75% wear.
11- and 12-speed chains: Replace at or just before 0.5% wear.
Always consult your chain manufacturer for specific replacement instructions.
Note: For SRAM® AXS 12-speed road chains, use the Park Tool CC-4.
Durable and Reliable:
The CC-2 is compatible with most single-speed and derailleur chains and built to provide consistent, accurate measurements for years of use.
Included:
CC-2 Chain Checker
Instructions for proper use
Maintain smooth, efficient shifting and extend drivetrain life with the Park Tool CC-2 Chain Checker.

