New Derailleur Cable

A hanger separates the derailleur from the frame and is designed to bend or break on impact rather than damaging your frame or derailleur.

New derailleur cable.

Hangers are unique to your frame and it is a good idea to buy a spare when you buy a new frame. You don t have to be a mechanic to replace the rear derailleur cable. Shimano s low normal derailleurs on which it does the opposite. Make sure that the hanger is visibly straight has no stress marks or nicks and that the threads are not damaged.

The derailleur hanger is a piece of aluminum bolted to your frame that your derailleur is then mounted on. Amazon s choice for derailleur cables hyacinth 10pcs premium bike shift cable professional bicycle shift wire kit for mountain and road bicycle for free 5 o rings 10 end ferrules and 20 end caps 4 6 out of 5 stars 433. We ll show you how to perform cable replacement using a shimano equipped road bike. Mount new derailleur before installing the new derailleur make sure the current derailleur hanger is in good shape.

In brief shimano sram and campagnolo all use different cable pull ratios the amount that a derailleur moves for every millimetre of cable pulled through by the shifter and mixing parts will. On most derailleurs when the shift lever pulls on the cable the derailleur moves up the cassette to a lower gear. The cable system is a common place to find issues that cause poor shifting. If the shifter is mounted on the handlebars you need the first run of cable to be long enough to allow the handlebars to turn fully without pulling on the derailleur cable.

If the derailleur hanger is damaged the new derailleur will never shift like it should. Dirt and grit can work their way inside the housing.