The secret of the Dura Ace BC-9000 shift cables is a polymer coating that looks like tubes wrapped around the cable under a microscope. This results in a smaller surface area, which rubs against the inner housing cladding. Fat is also kept longer. The main advantages are a much lower effort when shifting and the feeling of faster gear changes. - Details: - Special OT-RS900 outer sleeve (24 cm) for the tight radius of the Dura-Ace RD-R9100 rear derailleur - Silicone-greased OT-SP41 outer sleeve (170 cm) - Polymer-coated inner cables minimize friction and ensure smooth gear changes - 2 x short tip outer cable grommet for ST-R9100/R9120 - 3 x long tip outer cable grommet - 1 x sealed outer cable grommet, for rear derailleur) - 2 x internal cable end caps - 1 x protective cap for rear derailleur - 1 x external cable grommet for front derailleur with fully external cable guide - Type: Gear cable kit - Compatibility: Shimano Dura-Ace R9100 Material - Cable: stainless steel, polymer coated Scope of supply - Scope of supply: 1 gear cable set Diameter - Cable: 1.2 mm length - rear train: 2.1 m - front train: 1.8 m