SHIMANO SLX FC-M660 Front Chainwheel Chainrings 26T - Y1KS26000

This "A" match indicates that the parts are the same in materials, appearance, finish, size, etc.

- FC-M665

The following is a "B" match which indicates that the parts are usable, but differ in materials, appearance, finish, size, etc.

- FC-M770

Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.