The upper and lower mounts are heavy-duty Teflon steel alloy spherical bearings to eliminate deflection. The vehicle specific ride tuning was derived after extensive dyno and real-world testing. The result is multi-stage valving that optimizes ride quality and handling characteristics for your specific application. The brushed, Zinc plated, clear coated, monotube shock body is nitrogen gas charged to eliminate performance-robbing cavitation during compression and rebound, allowing the shock to dissapate heat more efficiently, drastically reducing shock fade. The external reservior allow for additonal fluid capacity and maximum heat dissapation.