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Park Tool CC-4.2 Chain Checker Tool
Park Tool CC-4.2 Chain Checker Tool. A worn bicycle chain can cause poor shifting and expensive drivetrain damage. The Park Tool CC-4.2 Chain Checker is a drop-in gauge that measures chain wear accurately. It contacts the chain in three places eliminating guesswork. Compatible with 5 to 13-speed and single-speed chains it indicates wear at 0.5% 0.75% and 1.0% matching manufacturer replacement recommendations.
Compatible with T-Type Chains and non T-Type Chains.
- Measures bicycle chain wear accurately preventing expensive drivetrain damage
- Laser-cut design contacts the chain at three points providing quick and precise wear measurement
- Compatible with 5 to 13-speed derailleur chains and single-speed chainsIndicates chain wear at 0.5% 0.75% and 1.0% aligning with manufacturer recommendations for replacement
$8.03
Original: $22.95
-65%Park Tool CC-4.2 Chain Checker Toolā
$22.95
$8.03More Images



Park Tool CC-4.2 Chain Checker Tool
Park Tool CC-4.2 Chain Checker Tool. A worn bicycle chain can cause poor shifting and expensive drivetrain damage. The Park Tool CC-4.2 Chain Checker is a drop-in gauge that measures chain wear accurately. It contacts the chain in three places eliminating guesswork. Compatible with 5 to 13-speed and single-speed chains it indicates wear at 0.5% 0.75% and 1.0% matching manufacturer replacement recommendations.
Compatible with T-Type Chains and non T-Type Chains.
- Measures bicycle chain wear accurately preventing expensive drivetrain damage
- Laser-cut design contacts the chain at three points providing quick and precise wear measurement
- Compatible with 5 to 13-speed derailleur chains and single-speed chainsIndicates chain wear at 0.5% 0.75% and 1.0% aligning with manufacturer recommendations for replacement
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Product Information
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Shipping & Returns
Description
Park Tool CC-4.2 Chain Checker Tool. A worn bicycle chain can cause poor shifting and expensive drivetrain damage. The Park Tool CC-4.2 Chain Checker is a drop-in gauge that measures chain wear accurately. It contacts the chain in three places eliminating guesswork. Compatible with 5 to 13-speed and single-speed chains it indicates wear at 0.5% 0.75% and 1.0% matching manufacturer replacement recommendations.
Compatible with T-Type Chains and non T-Type Chains.
- Measures bicycle chain wear accurately preventing expensive drivetrain damage
- Laser-cut design contacts the chain at three points providing quick and precise wear measurement
- Compatible with 5 to 13-speed derailleur chains and single-speed chainsIndicates chain wear at 0.5% 0.75% and 1.0% aligning with manufacturer recommendations for replacement






















