Park Tool CC-4.2 Chain Checker Tool
Stay ahead of drivetrain wear with the CC-4.2. This precision tool lets you quickly measure chain stretch, helping you avoid premature cassette and chainring wear.
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Compatible with 5–12 speed chains (including SRAM Flattop & Shimano HG+)
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Clearly indicates 0.5% and 0.75% wear points
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Long contact arm fits past tight links and rollers for accurate readings
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Laser-cut steel body for durability and precision
-
A must-have for routine maintenance and chain replacements
Simple, accurate, and built to last — don’t guess your chain wear, check it properly.
Stay ahead of drivetrain wear with the CC-4.2. This precision tool lets you quickly measure chain stretch, helping you avoid premature cassette and chainring wear.
-
Compatible with 5–12 speed chains (including SRAM Flattop & Shimano HG+)
-
Clearly indicates 0.5% and 0.75% wear points
-
Long contact arm fits past tight links and rollers for accurate readings
-
Laser-cut steel body for durability and precision
-
A must-have for routine maintenance and chain replacements
Simple, accurate, and built to last — don’t guess your chain wear, check it properly.
Original: $28.55
-65%$28.55
$9.99Description
Stay ahead of drivetrain wear with the CC-4.2. This precision tool lets you quickly measure chain stretch, helping you avoid premature cassette and chainring wear.
-
Compatible with 5–12 speed chains (including SRAM Flattop & Shimano HG+)
-
Clearly indicates 0.5% and 0.75% wear points
-
Long contact arm fits past tight links and rollers for accurate readings
-
Laser-cut steel body for durability and precision
-
A must-have for routine maintenance and chain replacements
Simple, accurate, and built to last — don’t guess your chain wear, check it properly.
