I have the โTwo Stageโ Kelderman on my dually. Thatโs the one that replaces the rear spring shackles with a big hinged bracket with air bags. I still have my rear leaf springs but they are floating on the bags. The main purpose is improving the ride while unloaded, and it works.
I donโt believe there is much benefit while carrying my camper.
The Two Stage isnโt terribly expensive and I like mine because my truck is also my daily driver to work and back.
2017 Northern Lite 10-2 EX CD SE
99 Ram 4x4 Dually Cummins
A whole lot more fuel, a whole lot more boost.
4.10 gears, Gear Vendors overdrive, exhaust brake
Built auto, triple disc, billet shafts.
Kelderman Air Ride, Helwig sway bar.