The Swing Out Extension Brackets # LC182496 can be left in the out position and not swung in.
Since your 2010 Ram 4500 has a flat bed the part I think you are looking for is the HappiJac Extender Bracket # HJ54FR. This is a fixed extender that does not have swing in/out function. view full answer...
We do offer a 30,000-lb-rated gooseneck hitch for your 2018 Ram 4500 flatbed, B&W kit # BWGNRK1500, but it does require cutting and welding for installation.
This B&W hitch requires you to cut a 4-inch diameter hole in the bed and to weld the hitch in place. The hitch ball and safety chain hookups are included. The written instructions and a brief review video are linked for reference.
We do not offer any gooseneck hitches that are a purely bolt-on installation. view full answer...