RideTech offers this double convoluted air spring that has a 2140 lbs capacity at 100 PSI.
Specs:
- Minimum Height is 3"
- Ride Height is 4.5 to 5"
- Maximum Height is 7"
- Inflated Diameter is 6.5"
- Air Fitting Port is 1/4" NPT
Please Note that Firestone double convoluted air springs do not require a bump stop to avoid damage, however, your specific application may require a bump stop to maintain a safe ground clearance when deflated.