New model RD4600 GS
This is nominally a "10-speed" unit, but works fine with any number of speeds as long as the shifter matches the number of gears in back.
(See Capacity in Sheldon Brown's Bicycle Glossary if you have questions as to the capacity you need.
We recommend replacing the inner shift cable if you are changing the Derailleurs.
|Manufacturer's Part Number||Store SKU|