CC-3.2 Chain Wear Indicator panniers The Metron TTW Rear Wheel

The Metron TTW Rear Wheel is purpose-built for triathletes and time trialists who demand maximum speed and control

Injection-molded nylon composite outsole with SlipNot™ rubber tread for moderate pedaling stiffness and phenomenal trail traction: Stiffness Index 6

SWAT™ technology design allows for storage and tool integration

Unsurpassed reliability

CC-3.2 Chain Wear Indicator panniers The Metron TTW Rear WheelA 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.