Park Tool CC-3.2 Chain Wear Indicator D4 especially in the brake track

especially in the brake track area

Every element is designed to ensure you enjoy the most comfortable ride in the most demanding conditions

without affecting the Q factor

When new shapes

Park Tool CC-3.2 Chain Wear Indicator D4 especially in the brake trackA worn bicycle chain can cause poor shifting and in time can even cause excessive wear to the derailleur and rear cogs, causing a much more expensive problem. That's why bike component manufacturers recommend chain replacement at regular wear intervals. The Park Tool CC 3. 2 is a go no go gauge designed to accurately indicate when a chain reaches 0. 5% and 0. 75% wear (or "stretch"), the points at which most chain manufacturers suggest replacement.