The Trailer D-Ring Tie Down, # RR06, has mounting holes that are 1/4 inches in diameter. We recommend using backing plate # BP06 when installing this tie down to provide support for the tire down. view full answer...
I spoke to my contact at Surco and she informed me that the weight capacity for the Surco Lawn Chair Rack # SP501CR is 50 lbs. So you should have no problem carrying your 2 20 lb lawn chairs. view full answer...
If you could verify that the tongue weight capacity of the hitch on your 2014 Nissan Armada being on the higher end of the range you mentioned you could use the # MPG544 but if you are on the lower end instead the better solution would be the bike bunk adapter # CC-275 which attaches to the frame rails of the trailer and gives you a higher hitch opening for the bike rack.
The reason I mentioned the tongue weight is because adapters like this end up cutting the capacity of the hitch they... view full answer...
According to my contact at ProSeries the lift brackets included with the Pro Series Weight Distribution System # PS49582 measure 5-inches wide and will mount to your trailer frame so that their centers are 30-inches back from the center of the hitch ball. Based on your provided dimensions these should work fine for you. view full answer...
Sonic 21-foot travel trailers like their SN170VBH, which is 21-feet long with a GVWR of 4000-lbs, is certainly heavy enough relative to the Armada's weight of 5500 to 5900-lbs that a weight distribution system is called for. If you find that your anti-sway performance with your Blue Ox Sway Pro system # BXW0750 is unsatisfactory I recommend confirming that your specific system's spring bars are rated correctly for the actual loaded trailer tongue weight (TW).
The particular example trailer... view full answer...
I can help find the distance from your Nissan Armada to the farthest end of the bike racks you referenced though as of January 2018 we have not had a chance to test these racks with an Armada. To find out if either rack will work for you, just measure from the center of the hitch pin hole on your Armada to your garage door so you know the amount of room you have to work with.
The Kuat NV # NV22G, when it is folded up, the farthest part of the NV is 18-1/2 inches from the center of the... view full answer...
The 2" gained in trailer height comes from the height of the Lippert Center Point # LC1565391 itself. Increasing the air pressure will not gain any significant height as the air spring uses a lever type design which only moves the lower mount a small amount. Also as the spring was designed for a 5" width between the plates when installed the springs themselves will not extend much beyond that point.
If you wish for more height you might consider installing some taller Hangers # E4139.... view full answer...