Shimano Dura Ace rear derailleur cable kit for fitting or replacing a rear derailleur. High performance cable and outer.

More pliable than SP41 outer casing, designed to work specifically with the Dura-Ace R9100 Shadow derailleur without B-tension spring
Lubricated internally along its length with low-friction silicon grease to reduce cable friction
Special construction process makes for an axially stiff casing that transmits shifting movements accurately and quickly
Lined with a polymer sheath to assist with the smooth operation of the inner wire
For use with 1.2 mm diameter Polymer coated inner wires