Air Lift kit 60818 has a weight rating of 1,000 lbs.
We would recommend a Timbren SES kit for anything over 1,000 lbs.
2015 RAM 1500 Regular cab: DR1500DS (3,000 lbs capacity) or DRTT1500 (7,000 lbs capacity)
2015 RAM 1500 Quad or Crew Cab: DR1500DQ (8,600 lbs capacity)