Hellwig Air Bag Helper Spring Kits offer greatly improved handling and control under heavily loaded conditions. The air helper springs are installed between the frame of your Chevy / GMC 1500 2wd & 4WD Pickup and the suspension, providing load support through the use of compressed air. Each Hellwig Air Kit is specifically designed to maximize the safe load carrying capacity of your Chevy Truck up to it's Gross Vehicle Weight rating. Heavy duty brackets, higher test pressure, and a longer stroke make Hellwig air helper springs the superior choice to competitors.
Installed on 2005 GMC 1/2 Sierra, Extended cab, long bed, 2wd. Truck had 170k when installed and now pushing 200k without any issues at all. Used Hellwig compressor kit, too, and am beyond pleased. Truck now rides better than ever, where a bump used to be a jolt, it is now controllable and no where near as shocking over something bad. I run about 20psi when not loaded and 70-90 when loaded heavily. The more the load and the more PSI, it seems the better it rides.
Install was a breeze, ran airlines down the driver's side of truck, neck to parking brake line. Compressor is mounted to side of fuse box and just in front of brake master cylinder. Before I installed compressor, I put schrader valves in rear of fender area after slightly enlarging an existing hole.
SDTruckSprings was also amazing at customer service, as I had a piece missing from kit and it was promptly sent without question.
The only thing the kit needs to make much easier(when only buying compressor kit) is an "add a ci
Put a set on my 2006 Silverado extended cab 4x4 this weekend and was very happy with the effort it took to install by myself. I am your typical person, not overly mechanically inclined, but can change brakes, rotate tires, change oil and such. Took about 2 1/2 hours to install. Would definitely recommend to others.
For those of you looking to locate the airlines, and not wanting to drill in bumper, I used the(2) holes for holding my license plate on and worked great.