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Park Tool CC-4.2 Bicycle Chain Wear Checker

4.7 out of 5 stars 45 ratings

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Purchase options and add-ons

  • Takes the guesswork out of determining when a chain is worn out
  • Accurately measures wear on all 1/2" pitch bicycle chains
  • Compatible with all 5-to-13 speed chains
  • Compatible with single-speed chains
  • Compatible with SRAM AXS 12-speed chain
  • Go/no-go gauge indicates 0.5%, 0.75% and 1.0% wear
  • Made in the USA

Product information

Technical Details

Product Dimensions ‎29.24 x 0.58 x 8.51 cm; 65 g
Manufacturer reference ‎CC-4.2
Number of Items ‎1
Batteries Included? ‎No
Brand ‎Park Tool
Item Weight ‎65 g

Additional Information

ASIN B0DNN5FSSH
Customer Reviews
4.7 out of 5 stars 45 ratings

4.7 out of 5 stars
鶹 Rank
Date First Available Nov. 27 2024
Manufacturer Park Tool

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Park Tool CC-4.2 Bicycle Chain Wear Checker


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Frequently bought together

This item: Park Tool CC-4.2 Bicycle Chain Wear Checker
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Product description

A worn bicycle chain causes poor shifting performance and and actually wear out drivetrain components, causing more expensive problems. 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 and strategically comes in contact with the chain in three places, quickly and easily taking the guesswork out of determining when chain replacement is necessary. The tool works on any 5 to 13-speed derailleur chain (including SRAM AXS and Shimano XTR 12-speed chains) and is designed to accurately indicate when a chain reaches 0.5%, 0.75% and 1.0% wear, the points at which most chain manufacturers suggest replacement. The CC-4.2 provides measurements at the two most common wear intervals recommended for chain replacement on multi-speed bicycles: <0.5% Wear - acceptable on all derailleur and single-speed drivetrains. ≥0.5% Wear - 11-to-12-speed chains should be replaced at or before this measurement ≥0.75% Wear - 5-to-10-speed chains should be replaced at or before this measurement ≥1.0% Wear - chains on single-speed and two-sprocket systems should be replaced at or before this measurement

Top Brand: Park Tool

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