Overall the arms are made from quality tubular steel and the construction feels solid. The upper ball joints are sealed and cannot be replaced without a press. A well sealed case should make this unnecessary. Lubrication ports are available wherever you want them. Be careful with mirrors. I have over 8 years of automotive experience including deep, technically complex repair processes. I replaced the driver's side control lever and the fit was satisfactory. However, the upper ball joint nut threads were mismatched with the stud. I was careful not to damage the pin when inserting it into the spindle, so I was just sent the wrong part. The control lever on the passenger side was subject to a similar error. In addition, the control lever on the passenger side did not fit flush into the axle. No word on if matching parts would be mailed to me, but I was prepared when I decided it would be a good idea to order auto parts here. Overall I would be inclined to raise this rating to a higher level if they would send me the correct replacement parts.
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