Until we are all riding electronic shifting, we are all dependent on cables and housing for shifting. And it's amazing how crappy the shifting can be with cheap housing or cheap cables or both. Even with full length housing, contaminants can get inside the system and make shifting a bit of a nightmare. 11 speed drivetrains are particularly suscepitible. Many mechanics swear by teflon coated cables and premium housing to combat this. But what few realize is that the coating will wear off at the bends and gum the system up, even if with that premium housing. To solve this, Jagwire has developed their premium, "Elite Ultra-Slick" cable. Rather, than a coated cable, it's highly polished and then undergoes a proprietary treatment that results in smooth, effortless shifting. MSRP $25.99 USD