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310Rl Frame

I am considering purchasing a 2021 310Rl and changing the pin box to a Reese goose box. Can someone tell me which frame this coach? I want to know if I need the 3rd gen goose box.
 

kmac7800

Well-known member
With the "promise" of better MPG, which for me has not materialized. I went from 10.4 on my standard B&W manual sliding hitch to 9.4 on the Gen-Y (all based upon the trucks information center, not on numbers generated by me).

And I believe at the time I got the Gen-Y, Reese had not come out with their Rhino box version.

//KMac
 

Hotrodjohn

Well-known member
I put a Gen-Y Executive pin box on my 2020 310RL. It is a Rhino Box based frame.

Good luck and have fun!

//KMac
How long did it take to break in? What model did you get? I just put the 5500 on my 340. Like a brick for the first 500 miles but it’s getting better. Original preload is the black line and the red is after 550 miles
 

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kmac7800

Well-known member
I got model number GH-8066AL (5.5k pin weight), and I did not look at the green line when I first put it on. My MPG went down (from 10.2 to 9.2) which surprised me. I think I need to readjust it a little as I sit slightly nose high, and perhaps that will help with what I feel when I tow with it. Having said all that, I am happy to have the bed of my pickup usable when I need it.

//KMac
 

Hotrodjohn

Well-known member
I got model number GH-8066AL (5.5k pin weight), and I did not look at the green line when I first put it on. My MPG went down (from 10.2 to 9.2) which surprised me. I think I need to readjust it a little as I sit slightly nose high, and perhaps that will help with what I feel when I tow with it. Having said all that, I am happy to have the bed of my pickup usable when I need it.

//KMac
Ahhhh you said kingpin but you got the gooseneck? I have the 5500 king pin box. They didn’t have a sticker on mine like you have. Thanks for the reply.
 
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