I have been looking at lift 4 to 4.5" lift kit's to see which set of control arm's they come with.They for the most part seem to come with lower's from what I found.
The reason I want to know is that I recently sheared both my stock upper's in half.I have 4.5" lift spring's under it and was wondering if I should go ahead and replace the lower's as well.or are they fine with 4.5" of lift?
I thought it was weird that most kits came with lower's when my upper's failed.Thank's for any feed back.

 

Replace all 4

 

I dont know about a 4-4.5 inch lift's but i do know with my RC 3inch AAL i opted for the beefer lower control arms and im glad i did........Here soon im goin to get the upper's as well.........