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9. Like the lower arms, the uppers (PN 030101) are equally beautiful to look at. Detroit Speed has improved the suspension geometry by increasing camber gain and improving roll camber. They’ve also been computer modeled and all the components have undergone finite element analysis. They come loaded with Detroit Speed-designed aluminum/Delrin bushings, which are far stiffer and more precise compared to stock. The bushings also have CNC-machined beveled stainless washers and nylock nuts. The TIG-welded arms feature billet ball joint pockets for increased strength and come fully assembled.