Park Tool CC-4.2 Chain Checker General Stable drivetrain on the trail

Stable drivetrain on the trail

bikepacking and mixed-surface adventure riding is on your agenda

Suitable for all types of bikes

Integrated cable tension adjustment

Park Tool CC-4.2 Chain Checker General Stable drivetrain on the trailA worn bicycle chain causes poor shifting performance and can actually wear out drivetrain components, causing more expensive problems. The Park Tool CC 4. 2 Chain Checker is a drop in style gauge that measures bicycle chain wear. The laser cut CC 4. 2 accurately measures a long section of chain and strategically comes in contact with the chain in three places, quickly and easily taking the guesswork out of determining when chain replacement is