Chain Checker Tool
Chain Checker Tool
Chain Checker Tool
Chain Checker Tool
Park Tool

Chain Checker Tool

CC-4.2

$17.99
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California Region

  • San Rafael Available
  • Sausalito Available
  • Berkeley Available
  • Palo Alto Available
  • San Francisco Available
  • Sacramento Available
  • Los Gatos Available
  • Petaluma Available
  • Walnut Creek Available
  • San Jose Available
  • Pleasanton Available
  • Folsom Available
  • Roseville Available
  • Stanford Research Park Available
  • Distribution Center 2-4 days 10-14 days
  • Distribution Center 2-4 days 10-14 days

Colorado Region

  • Denver East Available
  • Denver Downtown Available
  • Highlands Ranch Available
  • Parker Available
  • Distribution Center 2-4 days 10-14 days

Enjoy FREE shipping on all orders over $99! Orders under $99 ship for just $7.95.

All bikes ship FREE, including top brands like Cannondale, Santa Cruz, Cervelo, Gazelle, and Pivot. For the best ride-ready experience, our Gold Label Assembly service is automatically added at checkout for only $79 (regularly $100). This ensures your bike is professionally built, tested, and expertly re-packaged by our certified technicians—It's bike shop quality, direct to your doorstep.

Some bikes may be ineligible for shipping due to manufacturer restrictions.

Shop with confidence! It's important to us that you are happy with your Mike’s Bikes purchase so we offer offer a 30-day return/exchange window for your unused gear and 14 days on all bikes. Our exchange and return process is fast and easy. If you choose to exchange for a different size or color, we will ship your product for free.

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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.

FEATURES:

  • 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 chains
  • Indicates chain wear at 0.5%, 0.75%, and 1.0%, aligning with manufacturer recommendations for replacement

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