AIR2B-6 Dominator D2500 single port 1/2 air bag 600 psi 2500 lb 58343 Brand new Dominator series line of air springs: the Dominator D2500! Featuring an unprecedented maximum restrained pressure of 600 psi, 7.7" usable stroke, and a load range of 294-2096 lbs.; this bad boy will give you the performance you crave for. With more lift, a softer, smoother ride, and the lowest price in the industry — you can't go wrong with the new Dominator D2500!