I installed the sre/4000 on my 5th wheel in sig and at the same time put the rubber pinbox on it. I'd do it again in a heart beat. My buddy has a montana that came with the factory version of the 4000 he says his rides good don't know it is back there. We were talking and both said we get a shock when the truck rear hits a normal to medium bump but don't feel when the trailer hits it. On some bumps on I95 I had alot (3 cycles oin the suspension in a big bump at 70 mph) of bounce in the truck but no jarring.
2018 Ram 3500 SRW crew cab long bed 4x4 diesel Lariamie 1-2018
2013 fuzion 322.8/25/2012
2000 Yellow Lab mix Dog, Earl,The One who gave me Unconditional Love picked up 9-12 or 13, 2001 till 2-7-2014 may he r.i.p.