The job
A pivoting two-pin mechanical checker with a viewing window, for the supported chain systems.
Park Tool · Chain-wear checker
Park Tool CC-2 Mechanical Chain Checker
A pivoting two-pin mechanical checker with a viewing window, for the supported chain systems.
$27.95Nov 7, 26, 12:52 AM · New York
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- Reading format Mechanical pivoting gauge and viewing window
- Contacts One fixed pin and one moving pin
- Current maker scope Most supported single-speed and derailleur chains; XTR 12-speed named
Reading format
Mechanical pivoting gauge and viewing window
Choose the format you will use
A moving window may suit comparison of indications over time, while fixed gauges provide selected go/no-go levels. Neither format establishes numerical accuracy just from its appearance.
What this choice changes
Read a moving gauge instead of choosing a fixed end
The CC-2 is the moving mechanical option in this group. One contact pin is fixed and the other moves with the gauge, letting you consult a viewing window instead of selecting a fixed threshold end. It is a different reading format from the CC-3.2 or CC-4.2, not an electronic measurement or an independently calibrated accuracy claim.
The exact maker guidance covers most single-speed and derailleur chains and expressly includes Shimano XTR 12-speed. It directs SRAM Flattop and T-Type 12-speed users to CC-4.2 instead. Use that model-specific guidance rather than the listing’s broad all-chains headline.
Park Tool’s manual notes that designed-in link play can give a new chain an indication of 0.25% or more. That reading alone does not prove the chain already has the equivalent amount of wear. Keeping the chain’s own instructions with the gauge is more useful than treating every displayed number as a universal verdict.
Specifications & supplied details
| Detail | Specification |
|---|---|
| Reading format | Mechanical pivoting gauge and viewing window |
| Contacts | One fixed pin and one moving pin |
| Current maker scope | Most supported single-speed and derailleur chains; XTR 12-speed named |
| Special-system limitation | Flattop and T-Type 12-speed directed to CC-4.2 |
| New-chain interpretation | Maker notes designed-in play may produce a nonzero indication |
| Package | One mechanical checker |
Choose for your actual setup
Choose the format you will use
A moving window may suit comparison of indications over time, while fixed gauges provide selected go/no-go levels. Neither format establishes numerical accuracy just from its appearance.
Use the chain-specific context
A new chain’s designed-in play matters to interpretation. Keep that distinct from assuming that any nonzero indication is wear.
Fit checks & limits
- No numerical display resolution or calibrated tolerance is established.
- The listing’s universal chain/speed wording does not override the exact maker’s named exclusions.
Questions before you choose
Why might a new chain give a nonzero indication?
The manual describes designed-in link play, including indications of 0.25% or more. That is not automatically the same amount of wear; interpret the reading with the chain’s own guidance.
Is it the right choice for Flattop or T-Type?
The current exact-model guidance directs those 12-speed systems to CC-4.2. Do not infer fit from a generic all-chains headline.
Is it a digital tool?
No. The reading mechanism is a moving pin and mechanical viewing window. KMC TL00011 is the separate LCD-readout choice in this catalogue.
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: B000OZFILW.