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Amazon.com : BIKE HAND Bicycle Chain Wear Indicator Tool Chain Checker - Compatible with Shimano Sram Campagnolo KMC & Other Brands for 7 to 12 Speed Chains - Maintenance for Road, Mountain
Bay City Cycles - When did you last check your chain stretch? When bicycle chains wear, the links slowly stretch, causing your chain to lengthen slightly. When your chain stretches, it's best
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