Shimano Ultegra CS-6600 Sprocket - 19T - Y1ZD1900E

For use with Shimano Ultegra CS-6600 10 speed 12-25T & 12-27T cassettes.

This Sprocket can also be used on the following cassettes:

- Shimano Ultegra CS-6700

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

If the correct Sprocket is unavailable you can also use the sprocket from the following cassettes:

- Shimano 105 CS-5600

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

These cassettes require the Shimano TL-LR15 Lock Ring Removal Tool.

Genuine Shimano replacement part.