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Anyone happen to have a part number for the bushings in the ORD bilstein’s? I believe they are the 5125 series. Tried doing a googly search but came up dry.
I am guessing you are having problems with the rear upper shock mounts on the 5125 series Bilsteins being too small for the GM stock rear upper stud mounts. I have a set of 5125 Bilsteins I bought from ORD, and I had the same problem. Luckily the old set of Rancho 5000 series of shocks I had still had upper urethane bushings in them that where still good. They fit the GM stock rear upper stud mounts. I pushed them out of my old Rancho shocks, and installed them in my Bilsteins. The upper rubber shock bushings that are a in the Bilsteins are pain to get out, but my Harbor Freight 20-Ton press made short work of them.
The red Rancho upper shock bushings pictured.
Four Bilstein 5125 shocks, with 16" stroke are mounted to this 1991 Crew Cab with a 10" lift.