I installed them in my 30ft RV on a Chevy 4500 chassis. They are better day and night than the OEM shocks that I removed at 25,000 miles. They eliminated front-to-rear stuttering under acceleration, braking or road dives. They also slightly reduced body roll. They were very easy to install and I'm only moderately mechanically savvy. I put the top piece back in place by tightening it with my thumb and then used a jack to lift and screw the bottom piece into place. Not bad once I figure out how to do it.
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