Is the air ride system on the mark 7s adjustable like an aftermarket setup or is it just an stabilizing system?

SYSTEM IS FIXED, SOME PEOPLE HAVE PLAYED WITH THEM, NOT LIKE SOME WHERE THEY WILL ADJUST MORE IF LOAD INCREASES...... FALSE! system can be adjusted by lowering or raising the sensors at either front wheel or on the pumpkin at the center of the rear axle. The system will always increase and decrease pressure to the air springs depending on load to keep vehicle ride height constant