Zone Offroad upper control arms for the Toyota Tundra are fully boxed and welded using 1/8" steel plate for incredible strength. For a quiet ride with low maintenance and excellent durability, these control arms have CNC machined bushing eyes and ball joint cups. They are loaded with factory style rubber bushings and MOOG brand ball joints. Keeping mud and grime off the ball joints is achieved with the ball joint caps. This creates a clean and high end look. The kit also includes hardware to mount the factory brake line brackets to the new upper control arms and new washers that work with the factory control arm mounting hardware. These upgrade control arms will help correct caster and add strength when compared to the factory upper control arms.