The Park Tool CC-4.2 Chain Checker Tool Available at Contender Bicycles
SKU: TL0869
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Park Tool CC-4.2 Chain Checker Tool

Regular price $17.95
Regular price $17.95 Sale price $17.95
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Product Details

A worn bicycle chain can cause poor shifting performance and, over time, lead to excessive wear on drivetrain components, resulting in more costly repairs. 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, making contact in three strategic places to easily determine when it’s time to replace your chain.

This tool works on 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 designed to accurately indicate when a chain reaches 0.5%, 0.75%, and 1.0% wear—the points at which most chain manufacturers recommend replacement.

General replacement guidelines:

  • Two-sprocket (single-speed) chains: replace chain at or just before 1.0%
  • 5-to-10-speed chains: replace chain at or just before 0.75%
  • 11-to-13-speed chains: replace at or just before 0.5%

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