This is THE track chain. 

NJS certified for professional Keirin racing in Japan, which is a sign that these chains are built for long-lasting precision and made to extremely high standards. Your scrawny chicken legs will not break this chain.

• 1/2" x 1/8"

• full bushings support precision rollers for a smooth, quiet ride

• stretch-resistant cro-mo steel

• 106 links (including threaded connector link)