Rear derailleur cables are probably ignored by most bikers - yet they are essential components that can ensure frictionless, precise shifting. On a road bike or MTB, precise shifting can sometimes make the difference between victory and defeat, and for casual riders, missing gears and miss-shifting can take the fun out of your ride or commute. For precise, jerk-free shifting, quality cables are therefore essential. Rear derailleur outers ensure that the cables remain free of dirt and are not exposed to the weather. Whether as a replacement or upgrade – this category contains everything you need to make your shifting smooth and efficient.