We put 4 shocks on our 2008, 313RKS and I just removed them to re install on our 2012, 321RLTS when it arrives. The shop I deal with for all vehicle repairs, found the shocks by calling a local Heavy Vehicle Repair business, who went right to Dexter and found the right ones for their axle/spring combination. It was least expensive to buy them as an all inclusive kit as opposed to just the shock. It included other parts, the mounts, that were already in place. The Dexter part number and information written on the box:
K71 - 175 - 01 Dexter Axle Shock Kit, fits 2 3/4 to 3 " tube for 1.75 width springs
I think it was around $400.00 for the kits. They helped to smooth out the ride somewhat. They will be helping out the new unit with the Mor/Ryde suspension. Instead of an air ride pinbox we put air springs on the Truck , that made a large improvement. The rear kitchen on the RKS was hard on the fridge contents.
Married To The Navigator
2005 Red GMC Duramax 4X4 HD Crew Cab
4" Magnaflow, Banks Air Intake
Firestone Ride Rite Air Springs