A worn bicycle chain can lead to poor shifting performance and accelerated wear on drivetrain comp...A worn bicycle chain can lead to poor shifting performance and accelerated wear on drivetrain components, resulting in more costly issues. The Park Tool CC-4.2 Chain Checker is a drop-in gauge designed to measure bicycle chain wear. Its laser-cut design accurately assesses a long section of the chain, making contact at three strategic points to quickly and easily determine when chain replacement is necessary. This tool is compatible with any 5 to 13-speed derailleur chain, including SRAM® T-Type, SRAM® Flattop™, Shimano® XTR® 12-speed, and Campagnolo® Ekar 13-speed chains, as well as single-speed chains. It is engineered to accurately indicate when a chain reaches 0.5%, 0.75%, and 1.0% wear, the points at which most chain manufacturers recommend replacement. Always consult drivetrain manufacturer specifications for unique recommendations. Made in the USA with a limited lifetime warranty from Park Tool.
A worn bicycle chain can lead to poor shifting performance and accelerated wear on drivetrain components, resulting in more costly issues. The Park Tool CC-4.2 Chain Checker is a drop-in gauge designed to measure bicycle chain wear. Its laser-cut design accurately assesses a long section of the chain, making contact at three strategic points to quickly and easily determine when chain replacement is necessary. This tool is compatible with any 5 to 13-speed derailleur chain, including SRAM® T-Type, SRAM® Flattop™, Shimano® XTR® 12-speed, and Campagnolo® Ekar 13-speed chains, as well as single-speed chains. It is engineered to accurately indicate when a chain reaches 0.5%, 0.75%, and 1.0% wear, the points at which most chain manufacturers recommend replacement. Always consult drivetrain manufacturer specifications for unique recommendations. Made in the USA with a limited lifetime warranty from Park Tool.