Shimano Hone M600 Sgs Rear Derailleur

This is a heavy duty, all-mountain, long cage rear derailleur with a unique Freehub axle mounting system for added durability.
It has a Low Normal return spring that enhances gear selection, especially in varied terrain and a cable tension saver that prevents impact generated tension within shifting system.
Note: This must be used with FHM600 Freehub.