This is an aluminum (or steel) shaft with screw in ball joint a-arms made to be easily interchangeable. There is a Narrow A-frame option that allows for the a-frame itself to be much narrower. To get a more specific A-frame built, call the store and they will special make it. This is a very sturdy design built and manufactured at Day Racing Products.
 
An aluminum upper A-frame with a bearing-style pivot design for racing suspension applications. Select shaft material and arm size based on your setup and confirm mounting compatibility.