BDS Suspension is now shipping complete 4" radius arm systems for the 2019+ RAM 3500 4WD trucks. These kits have been engineered for improved on-road comfort and offroad capability. Kits include high strength tubular radius arms, progressive rate coil springs, your choice of gas shocks, steering correction and more allowing clearance for up to 37" tires. As with all BDS Suspension systems these new 4" radius arm systems are backed by Factory Protection Plus for peace of mind wherever you choose to explore.