Any electric bike that has been modified or "chipped" will result in automatic disqualification of liability for any error codes or damage to the electric system. If an error code occurs due to modifications made to the bike, which affects its performance or functionality, we will not be held responsible. All service costs will still be applicable. By booking a service for a modified electric bike, either through our website or in-store, you automatically agree to these terms and conditions.
CC-4.2 - Chain Wear Indicator
CC-4.2 - Chain Wear Indicator.
- A worn bicycle chain causes poor shifting performance and accelerated wear on 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® T-Type, SRAM® Flattop™, Shimano® XTR® 12-speed, and Campagnolo® Ekar™ 13-speed chains) or single-speed chain, 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
- Some drivetrain manufacturers have unique recommendations specific to their components, always double-check to be sure
- Made in the USA and covered by Park Tool's legendary limited lifetime warranty
Product code: QKCC42.
Frequently Asked Questions
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Domestic shipping can take up to 5 business days.
Foreign shipping could take up to 14 business days.
Due to global supply chain challenges, shipping times could be longer than usual. -
All our products are subject to quality control.
Our warranty provides a guarantee against manufacturer defects.
The guarantee covers any manufacturing, design, or material defect. Please notify us within 2 months of noticing any defects.
It does not cover blows, improper use, or other issues that are not attributable to a manufacturer defects.
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Yes, we offer full and partial refunds.
Please enquire for more information about our Refund policy. -
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