The job
A three-contact drop-in gauge marked for 0.5%, 0.75% and 1.0% indications.
Park Tool · Chain-wear checker
Park Tool CC-4.2 Three-Contact Chain Checker
A three-contact drop-in gauge marked for 0.5%, 0.75% and 1.0% indications.
$19.95Nov 7, 26, 12:52 AM · New York
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- Gauge format Fixed drop-in indications
- Contact layout Three chain-contact locations
- Marked levels 0.5%, 0.75%, 1.0%
Gauge format
Fixed drop-in indications
Start with the chain system
For a special roller or link design, use the actual exact-model compatibility guidance. A generic speed count is not a substitute for the expressly named system.
What this choice changes
Fixed indications with expressly named modern-chain support
The CC-4.2 is a fixed drop-in gauge, so it offers marked indication levels rather than an analog window or an LCD number. It contacts a longer chain section in three places. Compare the contact format and the chain systems explicitly named for this version, not just the number of marks on the tool.
Park Tool identifies 0.5%, 0.75% and 1.0% indications and names supported 5–13-speed and single-speed chains. SRAM Flattop and T-Type, Shimano XTR 12-speed and Campagnolo Ekar 13-speed are expressly included in its current guidance. Do not transfer those statements to an older CC-4 or to another gauge simply because it is shown in the same family chart.
Choose the CC-2 if a mechanical moving readout is the format you want, or the CC-3.2 if its narrower documented chain scope and two fixed indications meet the need. The appropriate replacement decision still comes from the exact chain maker; the marks are not a universal service-life rule.
Specifications & supplied details
| Detail | Specification |
|---|---|
| Gauge format | Fixed drop-in indications |
| Contact layout | Three chain-contact locations |
| Marked levels | 0.5%, 0.75%, 1.0% |
| Named maker scope | Supported 5–13-speed and single-speed chains |
| Special systems expressly named | SRAM Flattop/T-Type; XTR 12-speed; Ekar 13-speed |
| Package | One gauge; no chain-joining operation |
Choose for your actual setup
Start with the chain system
For a special roller or link design, use the actual exact-model compatibility guidance. A generic speed count is not a substitute for the expressly named system.
Choose the reading format
This is a fixed-indication tool. A moving mechanical scale and an electronic display offer different reading formats, not automatically greater accuracy.
Fit checks & limits
- No measured calibration tolerance or universal roller-wear correction is claimed.
- The indication labels do not override the chain maker’s own replacement guidance.
Questions before you choose
Why compare it with CC-3.2?
Both are fixed-indication gauges, but CC-4.2 has three contacts, an additional 1.0% indication and expressly named chain systems that CC-3.2 does not claim.
Does it give an intermediate reading between the marks?
Its documented format provides fixed go/no-go indications, not a calibrated intermediate numerical readout. Compare the CC-2 moving-window format if that is the reading style you need, while checking its different chain coverage.
Does reaching a mark prescribe replacement for every chain?
No. Interpret the indicated condition using the exact chain maker’s recommendation; the marks are not universal replacement instructions.
Guides for this choice
Alternatives to compare
Selected listing details, manufacturer information and source images were compared. No hands-on trial or universal fit is claimed. Product identifier: B0DNN5FSSH.