I drive an old 2011 Sierra 2500HD. I haul a camper in the box.
The description offered on the product page was easy to understand. My truck has no lift kit, etc...
Install on tghe truck is pretty straightforward, (the spare tire is a bit in the way for the driver side one), especially since nothing was seized after all these years.
Immediately I felt a difference in the handling of the vehicle. Everything was firmer (yet smoother).
With the camper on, the truck was handling pretty good before the replacement, (considering that one shock was almost dead).
With the Bilsteins on, truck loaded, the ride is a whole lot smoother even on the poorly maintained Quebec Highways.
The price was hard to beat.
I do recommend this product.