The first time I put my 600lb. quad in the back of my 2010 TRX QC I knew I needed something to pick up the back end. Having a tool box behind the cab the quad rides way back in the box, thus resulting in major back end sag. The dealership told me they are often asked about the back end sag on the 1500's when any weight is in the back, and he didn't really have any solutions other than to lighten up the load (duh). After researching a solution I installed the Firestone Coil Bags, easy install, and fairly cheap. With bags installed, the quad loaded and 25lbs. air in the bags, I must say it made a huge difference, truck sat level, and handling greatley improved, especially when going over dips in the road.
So for under 100 bucks and about 1-2 hrs. install time this seems to be a quick fix for anyone who uses their truck for more than a family never go off hwy vehicle. Be interesting to see if they stand up to a cold Canadian winter.