Generally, trucks come from the factory with a small amount of "Rake". "Rake" is a term used to reference forward or rearward tilting suspension setups, where the front or rear is higher than the opposite end of the truck. This is mainly in place for the same purpose that many things are done from the factory; to appeal to a wide-audience. This specific "rake" setting can allow for better vehicle stability while towing, but not everyone tows all the time. On top of that, with upgraded suspension parts, the forward facing rake is no longer necessary to maintain ride balance while towing
If you are looking to level-out your F150 with stock suspension because you don't tow anything, or if you are looking to get rid of the rake in your upgraded suspension set up, look no further. MPT has found a solution with H&R's Rear Lowering Shackles for the 2009-13 F150 trucks. Improve looks and un-loaded performance with these shackles.