Product updated on 2019-05-17, Zone Offroad - ZON:D2301, 2006 to 2018 Ram 1500 4wd Upper Control Arm Upgrade Kit, Works with lift or level kit, The issue with most level kits for the newer Rams results from the stock upper ball joints being maxed out prior to the suspension fully drooping out when lifted more than 1" above stock. The ball joints are not designed for the extra strain when the suspension is bound up leading to premature ball joint failure. These new heavy duty UCAs are engineered to correct this issue by repositioning the ball joint to allow a full range of motion when used with most leveling kit and suspension lifts.These arms dwarf the factory units and are built from 1/8" steel, boxed and fully welded with CNC-machined bushing and ball joint cups. The arms feature a durable textured black finish and come fully assembled right out of the box with OE durometer rubber bushings for quiet, reliable function. OE-style heavy duty greasable ball joints are utilized for a long service free operation and superior corrosion resistance to uniball style control arms. Upgrade your late model lifted or leveled Ram 1500 with this set of head duty upper control arms. These UCAs will work with the Zone Offroad 4" & 6" suspension system for the 06-18 Ram 1500 models.