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RickandJanice · 03-21-2013, 06:55 PM

Bill,

Solid king pin box we have has specs the same as you have listed above:
Width 12"
6 bolts per side,
Spacing on bolt rows Horizontal 7 7/8" on center
Spacing on bolts Vertical 2" on center
Distance currently from fwd bolt row to pin center 14"
Distance currently from rear bolt row to pin center 22"

Joe,

MorRyde pin box we mounted on our unit is model RPB72-1621HD. Had MorRyde set the slide bushing for GVWR of 18,000 to match the unit even though we are currently lighter than that. Still great dampening of horizontal movement, would recommend MorRyde to anyone. Cannot believe the difference this system makes in towing these heavy units.

03-21-2013, 06:55 PM	#5
RickandJanice Senior Member Join Date: Jul 2009 Posts: 119	Bill, Solid king pin box we have has specs the same as you have listed above: Width 12" 6 bolts per side, Spacing on bolt rows Horizontal 7 7/8" on center Spacing on bolts Vertical 2" on center Distance currently from fwd bolt row to pin center 14" Distance currently from rear bolt row to pin center 22" Joe, MorRyde pin box we mounted on our unit is model RPB72-1621HD. Had MorRyde set the slide bushing for GVWR of 18,000 to match the unit even though we are currently lighter than that. Still great dampening of horizontal movement, would recommend MorRyde to anyone. Cannot believe the difference this system makes in towing these heavy units. __________________ Rick and Janice Binns 2006 MS 32TK3, Mor/Ryde Pin Box and I.S., Auto Level-Up 2012 Ford F450 6.7 L Diesel, air bags and 25K Reese Signature hitch (factory installed)