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 change the cable on my SRAM Eagle shifter? How do I set up my SRAM Eagle rear derailleur correctly? Can I use SRAM 1x11 shifters with a 12-speed Eagle derailleur? How do I maximize the lifespan of my SRAM Eagle drivetrain?