2500                         2600

2500 Compressed Height 2.8" Extended Height 8.3" Ride Height 5.5" to 6.5" Maximum Diameter 6"

2600 Compressed Height 2.8" Extended Height 8.75" Ride Height 6" to 7" Maximum Diameter 8"

2500 and 2600 Lb bags are the same price. Both come in a 3/8" or 1/2" port 

3/8" Port  $80.00 Qty: Size: 255C (2500) 224C (2600)

1/2" Port  $80.00 Qty: Size: 255C (2500) 224C (2600)

   
This is a bolt on kit for load leveling. 
It enables you to level the rear of your truck when hauling or towing.