Originally installed in 2012 and the GMC Sierra 2500HD rode much better.   Noticed lately the bed jumping around quite a bit.   The rubber bushings have worn out and the shackles are sitting on the over rotation stops.   Time for a new set.   Worth it to make the 2500 ride a little better.

These did not disappoint.  Night and day difference for me. I look forward to driving that truck now.