I reached out to my tech contact at Lippert and the Standard Replacement Shock - Black # LC283271 doesn't have a rated capacity but is designed only for use on 2-3/8 inch diameter axles. That axle size is the 3,500 lb axle, so seeing as they are designed for 2 shocks per axle, the closest I can give you to a capacity is approximately 1,750 lbs but shocks aren't weight bearing so that is why they aren't rated for a capacity.
Any axle above the 3,500 lbs would require the Lippert Components... view full answer...