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CC-4 - Chain Wear Indicator

Based on 2,049 reviews
Condition: New
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$19.95
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Availability: In Stock.
Fulfilled by Sheepshead Cycle

Arrives Monday, Nov 9
Order within 6 hours and 18 minutes

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At a glance

Condition
New
Model
CC-4
Dimensions
9.5 x 0.1 x 1.5 in
Weight
0.05 kg
Material
Metal
Item Type Name
CC-4 - Chain Wear Indicator
In the box
Park Tool CC-4 Chain Wear Indicator
Warranty
Limited Lifetime Warranty

Features 5

  • Chain Wear Indicator
  • The tool works on any 5 to 12-speed derailleur chain (including SRAM AXS) and is designed to accurately indicate when a chain reaches .5% and .75% wear
  • Takes the guesswork out of determining when a chain is worn out
  • Accurately measures wear on all 1/2" pitch bicycle chains

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 Chain Checker is a drop-in style gauge that measures bicycle chain wear. The laser cut CC-4 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 12-speed derailleur chain (including SRAM AXS and Shimano XTR 12-speed chains) and is designed to accurately indicate when a chain reaches 0.5% and 0.75% wear, the points at which most chain manufacturers suggest replacement. The CC-4 provides measurements at the two most common wear intervals recommended for chain replacement on multi-speed bicycles: Park Tool offers several options for measuring chain wear, depending on your needs and drivetrain components: Since our origins in the back of a bike shop in 1963, it has been Park Tool's sole mission to design and manufacture high-quality tools that empower mechanics and riders of all skill levels to service their bicycles. As with our other 500+ tools, our chain tools are a product of our decades of experience and expertise in the industry, in the shop and on the trail.

Specs 15

Brand Park Tool
Material Metal
Item dimensions L x W x H 9.5 x 0.1 x 1.5 inches
Item Weight 0.05 kg
Number of Items 1
Brand Name Park Tool
Number of Packs 1
Part Number CC-4

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 9

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


Durable, Accurate, Easy to Use
The Park Tool CC-4 Chain Wear Indicator is an indispensable tool for any cyclist looking to maintain their bike in tip-top condition. This little gadget is incredibly easy to use and provides a quick, accurate measure of chain wear, helping you decide whether it's time for a replacement before you suffer a mid-ride breakdown. The build quality is solid, typical of Park Tool's high standards, ensuring that this tool can withstand being tossed around in your tool kit without a problem. It’s a simple, yet effective way to extend the life of your drivetrain components by ensuring you never ride on a worn-out chain. For anyone serious about bicycle maintenance, this tool is a must-have. A small investment to keep your bike running smoothly and efficiently! ... show more
Reviewed in the United States on April 16, 2024 by Vic R

Inexpensive chain checker for regular maintenance
It’s simple and inexpensive. It’s Park tool quality and it works. In the end, it will probably save you a lot of money replacing your drivetrain if you check your saying wire somewhat regularly with one of these
Reviewed in the United States on September 27, 2025 by Scott

Terrific Product and Simple to Use
Now I can tell when my chain needs replacement. I no longer have to rely on my bike shop to tell me. It takes less than 2 seconds to see whether your chain needs replacement. For 11 and 12 speed chains, replace after .5% wear. For 10 speed chains, replace after .75% wear. Just snap onto the upper or lower chain section and see where the opposite end winds up. The video provided is excellent. ... show more
Reviewed in the United States on October 24, 2024 by Sisophous

Tool for bycicle.
Great tool really easy to used.
Reviewed in the United States on September 17, 2025 by ajv

Great tool for the bicycle tool box.
I ride bikes a lot, but never considered how important the chain was. Now it is easy to check my chains on all my bicycles to see if the chain needs replacement. If you are having a stretched chain on your bicycle too long it will damage the chain rings and other components making you bike shift not so good. Easy to use and you can trust the great products from Park Tool. Well made and a great part of your bicycle maintenance program. ... show more
Reviewed in the United States on January 2, 2023 by Markh

This is the one you want, don't get the CC-3.2
As the title says, this is the one you want to get because it measures the rollers from the same side and not push them on opposite directions the way cc-3.2 does. I was using cc-3.2 and was finding that my chain wear was excessive even after only 100 miles which made no sense since I was not abusing the chain. The same chain that showed .75% wear on CC-3.2 doesn't even show .5% wear on CC-4. The website that explains this in detail isn't around but it's still on archives dot org so google pardo chain measuring tools and then put that URL on archives dot org and you'll see why chain measuring tools in general aren't that good. This one however is better than most. ... show more
Reviewed in the United States on November 4, 2023 by Fixer of things

Should be in every cyclist's tool box. Potentially a money-saver.
Stop guessing. This chain wear checker is so simple and quick, that it becomes easy to regularly check your chain for wear. Place it on, squeeze and drop it down. Exactly what's needed to maintain our bikes efficiently and cost-effectively. Thank you, Park Tool and thank you, Amazon, for the super-quick delivery. ... show more
Reviewed in the United States on May 17, 2024 by DutchTouch1

Quick and Easy to Use
It is a very simple but quick way to check your chain for wear. I bought it and checked my chain, it was just at the end of it's useful life. So I replaced it and the shifting is now perfect again. I checked the new chain with this tool and saw the difference - nice!
Reviewed in the United States on August 16, 2024 by Paul SBR
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