Park Tool
Park Tool CC-4.2 Chain Checker Tool in Blue - Image 1 of 1

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Park Tool

Park Tool CC-4.2 Chain Checker Tool

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Item #: TL001712
$19.95

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Color: Blue
MFG #: CC-4.2
Blue
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CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP") Lead, which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

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Most items SHIP SAME DAY if ordered by 3pm PST and FREE SHIPPING on orders over $50.  Please note that oversize charges may still apply on some heavy or large items and free shipping does not apply to PO Boxes.

1-day free standard Shipping on most orders to California, 2-day free standard Shipping on most orders to Nevada, Arizona, & Utah.  Other states can expect delivery within 3 to 5 days.

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Park Tool CC-4.2 Chain Checker Tool

Check Yourself Before You Wreck Yourself

A worn bicycle chain causes poor shifting performance and can actually wear out drivetrain components, causing more expensive problems down the line. The Park Tool CC-4.2 Chain Checker is a drop-in style gauge that measures bicycle chain wear, taking the guesswork out of knowing when it's time for a replacement, before that worn chain starts chewing through your cassette and chainrings.

Features

  • Laser-cut, three-point contact design measures a long section of chain for quick, accurate wear readings
  • Compatible with 5 to 13-speed derailleur chains, including SRAM® T-Type, SRAM® Flattop™, Shimano® XTR® 12-speed, and Campagnolo® Ekar™ 13-speed chains, plus single-speed chains
  • Drop-in style gauge for quick, tool-free chain wear checks
  • Indicates wear at 0.5%, 0.75%, and 1.0%, aligning with manufacturer recommendations for timely replacement
  • Compact, durable construction built for the workbench or a jersey pocket
SPECIFICATIONS
Chain Compatibility 5 to 13-speed derailleur chains, single-speed chains
Wear Indicators 0.5%, 0.75%, 1.0%
Replacement Guidelines 11-13 speed: replace at 0.5% | 5-10 speed: replace at 0.75% | Single-speed/two-sprocket: replace at 1.0%
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