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Lowering the Pin Box

flyinguy68
Explorer
Explorer
I previously asked about creating more space between Truck Bed and 5th Wheel. Some suggested that I should have more holes & be able to lower my Pin Box. I was finally able to get to my rig and look & see.

As you see in the picture. If I lower it, I will have 2 bolts that are no longer supported by the 2 "L channel" supports. Is that a concern?

'11 GMC 3500 Diesel Dually
'13 Keystone Fuzion 360
Toys to be hauled:
'08 Can-Am Outlander 650 Max XT
'04 Honda 450 ES Foreman
'03 BMW K1200LT
13 REPLIES 13

flyinguy68
Explorer
Explorer
TRIPLE8 wrote:
Hi, I have the same pin box and also needed just a couple of inches for more clearance. did this 2 weeks ago, Towed it a couple hundred miles including some rough dirt roads and it worked well. I was also worried about the bolts below the angle iron but it does not appear to be an issue.


Thanks Triple8!

I very much appreciate the feedback from someone that has done the same thing!
'11 GMC 3500 Diesel Dually
'13 Keystone Fuzion 360
Toys to be hauled:
'08 Can-Am Outlander 650 Max XT
'04 Honda 450 ES Foreman
'03 BMW K1200LT

TRIPLE8
Explorer
Explorer
Hi, I have the same pin box and also needed just a couple of inches for more clearance. did this 2 weeks ago, Towed it a couple hundred miles including some rough dirt roads and it worked well. I was also worried about the bolts below the angle iron but it does not appear to be an issue.
06 chevy silverado 2500 d-max
2013 Ford F350 DRW
2021 Host Mammoth
2007 KTM 525 EXC
2019 RZR Turbo S
2020 Yamaha MT-07
87 Suzuki Samurai (highly modified)

flyinguy68
Explorer
Explorer
Old-Biscuit wrote:
Currently you have 6 bolts per side

IF you 'lower' pin box are you still going to have 6 bolts per side?

Any adjustment on hitch to 'raise' it?


Biscuit I will still have the 6 bolts.


wirenutz wrote:
Are you just going to lower it 1 bolt hole down, it will be fine, but 2 bolt holes down and olny using 3 bolts per side, hmmm I wouldn't do that


Just going to move it down 1 row & keep 6 bolts. I agree about not going down 2 rows & only using 3 bolts.
'11 GMC 3500 Diesel Dually
'13 Keystone Fuzion 360
Toys to be hauled:
'08 Can-Am Outlander 650 Max XT
'04 Honda 450 ES Foreman
'03 BMW K1200LT

Slated4Greatnes
Explorer
Explorer
If lowering doesn't give you enough room I would look at an air assisted pin box. I ended up putting an extention that pushes mine back and up because even with my longbed the nose was making contact with my stacks. After looking at several other trailers I see that my pin box is set back further than any of the others. Oh well, just my luck..
2004 WW SLC3505
Truma tankless WH, 6V's, LEDs inside/out, Flipped axles Michelin LTX's.

2006 F350 Tow Boss W/Training wheels
(Bulletproofed) ARP's, Decked blk/heads, BPD Remote OC, EGR & WP, Snow H20, 4.30:1, SCT W/GH, FS bags, 6" Aus Stax, Train Horns.

wirenutz
Explorer
Explorer
Are you just going to lower it 1 bolt hole down, it will be fine, but 2 bolt holes down and olny using 3 bolts per side, hmmm I wouldn't do that
2007 All American Sport Toy Hauler 38 foot, 14,400 LBS dry weight
1999 Four Door Freightliner,new 6 Speed Auto, new Cat Motor, 12,600 LBS, rear air dump, lowers rear by 3", air activated rear locker, air ride seats, air ride cab, air ride suspension

Old-Biscuit
Explorer III
Explorer III
Currently you have 6 bolts per side

IF you 'lower' pin box are you still going to have 6 bolts per side?

Any adjustment on hitch to 'raise' it?
Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31

RCMAN46
Explorer
Explorer
BB_TX wrote:
Mine looks pretty much just like yours, angle braces and all, and it is mounted in the lower holes.


I just noticed my neighbors 2 year old Montana has the same angle braces. Must be the current design on the Lippert pin boxes.

mikeh449
Explorer
Explorer
raise the fifth wheel

flyinguy68
Explorer
Explorer
BB_TX wrote:
Mine looks pretty much just like yours, angle braces and all, and it is mounted in the lower holes.


Thanks BB,

I'm going to go ahead and move it down
'11 GMC 3500 Diesel Dually
'13 Keystone Fuzion 360
Toys to be hauled:
'08 Can-Am Outlander 650 Max XT
'04 Honda 450 ES Foreman
'03 BMW K1200LT

flyinguy68
Explorer
Explorer
RCMAN46 wrote:
How level is the trailer now? Dropping the pin box will make the trailer about 2 more inches nose high.


The trailer sits pretty level, but I only have about 3-4 inches of clearance. I take it on some pretty nasty dirt roads and have on occasion had contact between the fiver and my truck bed. Got to get some more clearance
'11 GMC 3500 Diesel Dually
'13 Keystone Fuzion 360
Toys to be hauled:
'08 Can-Am Outlander 650 Max XT
'04 Honda 450 ES Foreman
'03 BMW K1200LT

BB_TX
Nomad
Nomad
Mine looks pretty much just like yours, angle braces and all, and it is mounted in the lower holes.

RCMAN46
Explorer
Explorer
How level is the trailer now? Dropping the pin box will make the trailer about 2 more inches nose high.

dbbls
Explorer
Explorer
I don't see what the L channel is doing anyway. I've never seen one with that on it. I would not worry about it, just move the box. I would clean it up the rust and give it a coat of paint also.
2011 F-350 CC Lariat 4X4 Dually Diesel
2012 Big Country 3450TS 5th Wheel