Originally Posted by Defiant530
So our quandary is what to do for a hitch , the Trilogy has the Trail-air Tri-glide on it, so should we go with an air-ride or a standard hitch ?
Standard. You already have an air-ride kingpin (pin) box, so you don't need to duplicate the air ride part.
Ultra-Fab Products, Inc.| - Trailair® Pin Box
Your 5er will have a wet and loaded pin weight of almost 3,500 pounds, and the GVWR of the trailer is over 17k. So you need a hitch with at least 3500 pounds pin weight capacity and 18k gross trailer weight capacity.
I don't think Dodge makes a shorty dually, so you probably don't need a slider hitch.
The hitch mounting system in the truck bed is one big difference in 5er hitches. Most have bed rails that are in the bed, and the hitch plugs into those bed rails. Most folks prefer the hitch rails to be mounted under the bed, so when you remove the hitch you have a clean bed floor. But those cost quite a bit more than the ones with the bed rails in the bed. I'll use Reese as the example for two different 5er hitches that will work great with your trailer:
Reese Elite hitch and install kit = under bed rails:
Fifth Wheel for 2012 Dodge Ram Pickup - Reese Elite RP30142
Fifth Wheel Installation Kit for 2012 Dodge Ram Pickup - Reese Elite RP30074
Complete Reese Elite Fifth Wheel Kit from ETrailer.com: Retail: $2,001.64 Today: $1,639.34
Reese Select Plus 20k 5er hitch with in-bed rails:
Fifth Wheel Head: RP30081 Price: $719.95
Installation Rails: RP50140-58 Price: $294.90
Complete Fifth Wheel Kit: Retail: $1,820.24, Today: $1,014.85 from ETrailer.com
Fifth Wheel Hitch Specs: 5000 lbs TW (max pin weight), 20000 lbs GTW (gross trailer weight)
Reese Select Plus 5th Wheel Trailer Hitch - Single Jaw - 20,000 lbs RP30081
Reese Quick-Install Custom Base Rails and Installation Kit for 5th Wheel Trailer Hitches RP50140-58
Note that Reese also makes cheap 5er hitches called the Pro Series. Don't even look at those.
Install cost for the bed rails will be more for the Elite 5er hitch. The smart pros remove the bed, then install is a snap. You can do it without removing the bed, put it's a PITA working in tight, cramped space under the bed. Download the install instructions and understand them before you attempt to DIY.