I previously ised the Firestone bags on a different truck and really liked them. I sold that truck and needed to add air bags to my new truck. I started pricing them and these bags had very good reviews and the price was much cheaper than the Firestone bags.
My first tow with them I wasnt very happy with the ride. Come to find out the bags were deflating. Checked for leaks and found where the air tubing was leaking at one of the push in fittings due to the cut not being square. I trimmed the tubing and put it back together and they have worked great since then. (The cut on the tubing could have been my fault but Im pretty certain that wasnt a cut I made, but it could have been). Other than that cut the bags have worked great and really help the ride when I am towing. My 5th wheel is a 2002 32' trailer than weighs approx 12k. With about 44 psi in the bags the truck rides great. My truck is a 2011 GMC 2500 Denali HD Duramax 4x4.

Installation is super easy. Works great to level my truck back out after hooking to my fifth wheel.

This is the stainless version and while the plates and lines are stainless the rest of the hardware is not. Its a bummer - i wanted the stainless because i live in in the rust belt. The instructions list several places you can mount the air inlets but the braided lines are only long enough to reach the bumper area - it would have been nice to have them in the gas tank door but the passenger side would never reach that far - despite the instructions indication that installing at that location was an option.
These have JIC ends on the stainless lines however they are made very poorly and all leaked when tightened snug,. I had to remove them and reinstall with thread sealant If they are going to use crappy ends the least they could do is provide some teflon or pipe dope to seal them with,. JICs are not supposed to need anything to seal jus 1/6 turn past finger tight but these are craptastic. They do not tell you to do this but I inflated the bags and sprayed all the connections with soapy water to ensure they were not leaking. If I had not done this I would have had trouble.

After everything that they are nice bags. I put them on my GMC 2500 and it nicely leveled it with the truck camper on. It takes some effort to get the pressure right. They don't really give instructions on how to set them and they really should. If you put just enough pressure in them to separate the overload spring from the main pack you get a good ride with level headlights. They do not take much air at all, inflating from shop pressure takes some effort to get right, they inflate very fast and if your trying to get to say 20 PSI on both its tough. Understand that you need to set the pressure with the load on the truck because 5psi with the truck empty could be 15-25 with it loaded. It makes sense, PV=NRT from physics and all but again its not explained in the manual. when i set them at 5psi and then put the camper on they were at 18. If you had them to high with the truck empty you could be over the PSI limit on the bags with the truck loaded.

Overall, the install was easy and not at all time consuming, just frustrating because of the leaks. There is on the gas tank side a bastard bolt that you cannot get to with a torque wrench and have to just snug up by feel because the gas tank skid is in the way.

I just used this for a 1200 mile trip with the truck camper right after installing them and highly recommend them for improved ride quality and keeping your head lights level .

I purchased this Airlift system to help with trailering dump trailers. I run several trailers with 10-14k gvwr. Contractors do not always load evenly! Pulling front heavy trailers can make you sea sick on bad roads, not to mention loss of steering stability. I purchased with the 72000 wireless system. I already have enough valve stems to check each trip.(4 on truck, 4 on trailer) So this set up seemed a better choice for my needs. After playing with the system, up and down once installed I decided to read the directions on how to use. Installation of the 88338 was as advertised. The one thing that puzzled me was the width of the u-bolts and top brackets. They were about an inch wider than my frame (2015 silverado 2500HD) So I messed with them until I looked at pics in guide and saw theirs tight to the frame on the inside, so I decided good enough for them, good for me. Easy installation with hand tools, tube cutter a must have. Lisle makes a good one, available most Auto stores. Get yourselves a pack of longer zip ties, 18" if you want to go around frame, supplied ones too short. Go on YouTube and watch several videos prior to installation, they will help greatly. Manual inflation valves were mounted under spare tire key door. No metal to drill through. There is actually a little square opening on the back side of bumper mounting structure just perfect for this rear mounting next to license plate. Only trouble I had was passenger side where the two brackets for brake lines. One is hydraulic service brakes , no issues, the other is the e- brake. The e-brake bracket had to be twisted a little to lay flat on the Airlift bottom bracket. Installed on Friday and used the following day. Wow what a difference in towing! Had I known how much an improvement this system would make when towing a trailer, I would have installed the second day after buying the truck. Just make sure you dont install valve stems to close together, allow for rubber and metal washers. Forget the metal helper Springs, go with the Air Lift system you won't be disappointed.

This product is built of good quality materials. and installed easily on my 2013 2500HD