Chain Checker Cc-2

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Chains needs replacement alleviate poor shifting and uneven drive train wear, manufacturers recommend chain replacement before rear cog replacement. The CC-2 is compatible with all derailleur chains. For 9 and 10-speed chains, replace chain at or just before the 0.75% readings. For 11 and 12-speed chain, replace at or just before the 0.5% reading. Check with manufacturer for specific replacement instructions. Show more