Installation of longer air bags into the rear coils. - Airlift kit 60818 (for 2009-2015 Dodge Ram 1500). Spring part number 60318. 4.35 inches diameter by 12 inches long. The Land Rover kit 61741 has springs 4.35 inches diameter by 9 inches long. - Using with genuine spring packers, ANR2938, top and bottom, which are 3/8" high each. - Springs are NRC4304, which are supposed to be 170 pounds per inch and 17" long. Mine measure closer to 16.5".
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