Review on Hellwig 6113 Air Spring Kit by Will Jenkins

Fits F350 SD SRW 4X4 Lariat 6.7L 2011 Very thick and heavy painted steel parts and fasteners. The airbags are large and seem very well made. The instructions are sufficient but brief. If you have a factory or aftermarket fifth wheel, it will take some patience to install these airbags. But I think they are worth the extra time. I put the truck on jack stands (towards the inside of the axle). If you place the jacks on the outside of the axle, you will not be able to mount the two threaded studs and half-round braces that are on the underside of the axle. I removed both rear wheels, the spare tire and the left shock absorber. If you don't have an elevator or can't work from a pit, you'll need to remove these items to gain access to everything you need and install airbags. ***** When installing the upper brackets and heat shield (passenger side) it is important to remember that once the bracket is tightened from the underside of the side member you will not be able to access the bolts that attach the bracket to the air bag. There is some adjustment built into the holes of the brackets. and you will only know where to install it after some trial and error. The bracket for moving the stock brake line bracket is not very convenient to use because the brake lines don't have much play. I am planning to modify or manufacture my own mount for a better fit. Okay, once I routed the air ducts and inflated the sacks. I was very pleased. I inflated the bags to 50psi and the truck went up 8-9 inches. I can't wait to hook up the fifth wheel and inflate the bags for a perfectly flat setup. I blew the bags down to 15psi and they cushioned the stock suspension really well over bumps, railroad tracks, potholes, etc. I would give 5 stars but I haven't tested the system yet.