Steeda was the first company to introduce S550 Diff bushing Inserts all the way back in early 2015. Not only was this kit designed to completely fit around the stock bushing cutouts, but they came in two different durometers, 80 and 90 durometer. It’s been common practice to “share” the extra bushings, the ones not used, with a friend. So Steeda came out with a hardware kit designed just for that. This kit contains all of the hardware needed to use your buddy’s extra bushings on your Mustangs.
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