motorcare

5100's for me. I had 4600's on my 08 2500HD and was happy with the control although the ride was fairly firm. Switched to 5100's and had an immediate improvement in ride with pretty much the same control. The 4600 dampening is the same compression and rebound and the 5100 has slightly less compression than rebound. For comparison the stock Ranchos on my 2020 2500 that I replaced with 5100's at 4000 miles had almost no compression dampening and very little rebound dampening; crazy amount of bobbing when pulling!