Which ferrules should I use for my SRAM Eagle cable housing? We advise that you use aluminum ferrules. Plastic endcaps have excessive flex, which can affect shifting performance. Related articles How do I determine the right chain length for my SRAM Eagle drivetrain? How do I set up my SRAM Eagle rear derailleur correctly? How do I change the cable on my SRAM Eagle shifter? Which cleaner can I use on my SRAM drivetrain? How do I use my shifter's barrel adjusters to improve shifting on my SRAM Eagle derailleur?