Shimano Brake And Derailleur Casing

- Shimano brand casing with internal lining for optimized response
- Brake: offered in a stiffer (M-System) for MTB, or a more pliable (SLR) version for road applications (can be used for either discipline depending on user preference)
- Derailleur: (SIS-SP41) compressionless design pre-lubricated with silicon grease to decrease cable friction