Compact Chain Wear Indicator Tool for ParkTool CC-3.2

The Park Tool CC-3.2 Bicycle Chain Checker is a vital tool for ensuring the longevity and performance of your bicycle's drivetrain. A worn chain can lead to poor shifting and excessive wear on the derailleur and rear cogs, resulting in a much more expensive repair down the line. That's why component manufacturers recommend regular chain replacement based on wear intervals.

The CC-3.2 is a go/no-go gauge designed to accurately indicate when a chain has reached 0.5% and 0.75% wear, commonly known as "stretch." These are the points at which most chain manufacturers suggest replacement. The tool features permanent measurement markings and is compatible with most derailleur chains from 5 to 12-speed. For 5-to-10-speed chains, replace when the 0.75% side fits flat into the chain. For 11 and 12-speed chains, replace when the 0.5% side fits.

Park Tool offers several options for measuring chain wear, including the CC-2 with an incremental reading from 0% to 1%, and the CC-4 which is specifically designed for SRAM AXS 12-speed road chains. Regardless of the model, each tool is a product of Park Tool's decades of experience and expertise in the industry, ensuring high-quality and reliable performance.

The CC-3.2 provides clear, easy-to-read guidance on when to replace your chain:

<0.5% Wear: This chain has less than 0.5% wear, which is acceptable on all derailleur and single-speed drivetrains.

≥0.5% Wear: This chain has at least 0.5% wear. 11-to-12-speed chains should be replaced at or before this measurement.

≥0.75% Wear: This chain has at least 0.75% wear. 5-to-10-speed chains should be replaced at or before this measurement.

With the CC-3.2, you can accurately measure chain wear and avoid the costly consequences of a worn-out component. Whether you're a professional mechanic or a dedicated home bike enthusiast, this tool is an essential part of your toolkit, empowering you to maintain your bicycle's performance and longevity.

Park Tool's commitment to quality and innovation is evident in the CC-3.2, as it has been since the company's origins in the back of a bike shop in 1963. With over 500 tools in their lineup, Park Tool continues to be a trusted brand among mechanics and riders alike, providing the tools needed to service bicycles with precision and confidence.

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