[jhv48]

If you want your steering to feel more connected, solid and precise, and you don't like the steering wheel wiggle whenever you drive over a pebble in the road (not to mention the steering wheel vibration at 60-70 mph) then install these ball joints. They will make your street driving much more pleasurable. As for bump steer geometry or racing benefits, someone else needs to study them. All I know is they were well worth the money in my case.