$29.99
The CC-4.2 accurately measures chain wear, helping you determine when to replace your chain for optimal performance.
It uses a drop-in style gauge that contacts the chain in three places, providing precise wear measurements.
Replace single-speed chains at 1.0%, 5-10 speed chains at 0.75%, and 11-13 speed chains at 0.5% wear.
Yes, it works with any 5 to 13-speed derailleur chain and single-speed chains.
Change your chain frequently using the CC-4.2 to prevent excessive wear on your cassette.
The Park Tool CC-4.2 Chain Wear Indicator is a laser-cut, drop-in style gauge that accurately measures a long section of chain. It contacts the chain in three places, making it easy to determine when replacement is necessary.
This tool works with 5 to 13-speed derailleur chains and single-speed chains, including popular models like SRAM® T-Type and Shimano® XTR®. It indicates when a chain reaches 0.5%, 0.75%, and 1.0% wear, helping to prevent drivetrain damage.