Originally Posted by subyski
It's cheaper just to make the inserts. Manufacturing costs increases when they have to produce custom stampings and welding brackets for the strut housing. Especially if it will be a low volume product. One reason why the Bilsteins are more espensive because it's a complete strut. A more plug & play setup.
I just hope we get D-specs soon. With my 02 SI Koni did the inserts and for the same price I was able to get D-specs and they were just plug and play.