Rock sliders are a must for any serious rider. If you find yourself in those big rock and steep camber changes, eventually you will find that your side rails meet the ground. Yamaha did a great job on the X4 by keeping the wheelbase short for nimble maneuvering especially for a 4 seater, but with how easy they install and how much protection they offer at a low price point, I wouldn’t run the machine without them.
Installation difficulty is about 20 minutes if you are doing it for the first time, you do have to pull a panel out of the way but that is real simple and it all goes together with hand tools.
Plus they look great!