KMC Chain Checker

For precise determination of chain wear Well-maintained bicycle chains increase riding pleasure and extend the lifespan of your drivetrain. With a bit of manual skill, you can easily do the work yourself. KMC provides specially designed tools for the precise measuring, shortening, opening, and closing of bicycle chains. This makes maintenance and assembly work on the drivetrain quick and routine. With the KMC Easy Chain Checker, you can quickly and accurately check the wear condition of your chain. Regular inspection helps to keep the drivetrain efficient and prevents premature wear of chainrings and cogs. Workshop experience? Nice, but not necessary. Place the Chain Checker on the chain by resting one end of the tool on a chain pin and inserting the other end into a chain link opening. Let the tool sink into the chain. Depending on how deeply the Chain Checker falls between the links, it shows the current wear level of the chain. For this purpose, the gauge has a fine scale that allows you to reliably determine the wear level of your chain. The measurement markings indicate the chain’s elongation in graduated millimeter ranges. If the measured value is below 0.2 mm, the chain is in good condition and can be used without concern. Values from 0.4 mm to 0.6 mm indicate slight wear. The chain is still functional but should be checked regularly and replaced soon if used for sports. From a value of 0.8 mm, the gauge indicates severe, i.e., excessive wear. In this case, replacement is strongly recommended to avoid consequential damage to cogs and chainrings. One side of the Chain Checker is intended for standard chains, the opposite side is specially designed for Flattop chains. Depending on the chain type, simply align the tool accordingly.