Park Tool CC-3.2 Bicycle Chain Checker 5-12 Speed
$12.95
Price: $12.95
(as of May 22, 2026 17:15:18 UTC – Details)
Product description
Park Tool CC-3.2 Bicycle Chain Checker
A worn bicycle chain can cause poor shifting and in time can even cause excessive wear to the derailleur and rear cogs, causing a much more expensive problem. That’s why bike component manufacturers recommend chain replacement at regular wear intervals. The Park Tool CC-3.2 is a go/no-go gauge designed to accurately indicate when a chain reaches 0.5% and 0.75% wear (or “stretch”), the points at which most chain manufacturers suggest replacement. The CC-3.2 is long, accurate and features permanent measurement markings. The CC-3.2 works on most derailleur chains* from 5 to 12-speed. For 5-to-10-speed chains, replace chain just as the gauge fits the 0.75% side fits flat into the chain. For 11 and 12-speed chain, replace as the 0.5% side fits. Check with manufacturer for specific replacement instructions.
*NOTE: For SRAM AXS 12-speed road chains, use the Park Tool CC-4.
How to Read the CC-3.2
<0.5% Wear
This chain has less than 0.5% wear, which is acceptable on all derailleur and single-speed drivetrains.
≥0.5% Wear
This chain has at least 0.5% wear. 11-to-12-speed chains should be replaced at or before this measurement.
≥0.75% Wear
This chain has at least 0.75% wear. 5-to-10-speed chains should be replaced at or before this measurement.
Park Tool offers several options for measuring chain wear, depending on your needs and drivetrain components:
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Price
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Measurement Style
Incremental Reading – 0% to 1% Go/No-Go – 0.5% & 0.75% Go/No-Go – 0.5/0.75/1.0%
Single-Speed Chains
✓
no data
✓
Most 5-to-12 Speed Chains
✓
✓
✓
SRAM AXS 12-Speed Chains
no data
no data
✓
TRUSTED SINCE 1963
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.
100
Accurately measures wear on all 1/2″ pitch bicycle chains
Compatible with most 5-to-12 speed chains
Go/no-go gauge indicates .5% and .75% wear
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