VG Sports 9 Speed wear Resistant Lightweight Bicycle Chain Product color:Rainbow New technology 1. New infiltration process, wear resistance increased by 30-50% 2. Titanium-plating technology, titanium-plating technology can effectively reduce the friction coefficient, easy to maintain, and the surface strength is higher 3. The design of the mud d..

VG Sports 11 Speed wear Resistant Lightweight Bicycle ChainProduct color:Rainbow New technology 1. New infiltration process, wear resistance increased by 30-50% 2. Titanium-plating technology, titanium-plating technology can effectively reduce the friction coefficient, easy to maintain, and the surface strength is higher 3. The design of the mud di..