Shimano WH-RS21-CL-R Rear Left Lock Nut Unit - Y49V98030

For use with Shimano WH-RS21-CL rear wheels.

This Rear Left Lock Nut Unit can also be used on the following rear wheels:

- Shimano WH-RS31-R
- Shimano WH-RS11-R

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

Genuine Shimano replacement part.