Polaris RZR XP Turbo 18-19 (Fox Dynamix Pro-UTV) Stage 2 Performance Spring System | EibachAll systems include springs, sliders, stop rings and complete setup instructions Race proven durability and quality Engineered and tested by drivers Designed for 2 and 4 seat vehicles Adjustable shock lockout collars included to allow fine tuning of the transition point of the dual spring setup Improves turn in response and better power hookup out of the turns Smoother ride over rough terrain Stiffer spring rates prevent bottoming in the G outs Made