Rancho 9000's might have been an oops
I installed Rancho 9000's on our Dodge 3500 about 12,000 miles ago. 4000 miles hauling our single slide 9ft camper / towing, 3000 other miles towing cargo/flatbeds, and about 800 miles towing our Car...
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My experience with real Rancho shocks (not the fake ones that Ford uses) has been that when used hard, they don't last a long time, but Rancho is usually pretty good about warranty replacement. You seemed to cut your post short and did not include the Rancho response.
