My measurements were consistent with yours. I’m a little unclear about all of what Factor 55 offers, but pretty sure anything with a true width of 3.125” won’t work.
Factor 55 fits great and exudes quality. The side without the lock slides inside the outer surround of the Rivian hitch, helping a bit with clearance.
So, the true width is more than 3.125”. That does look nice. Thanks for confirming it works.
Yeah, the outside of the receiver looks to be about 3-7/16" - a 3-1/8" pin won't work, unless they are very conservative in their measurment.
Which model number of locking hitch pin did you get that fits?Factor 55 fits great and exudes quality. The side without the lock slides inside the outer surround of the Rivian hitch, helping a bit with clearance.
https://www.factor55.com/p-locking-hitch-pin-00037
The weird thing is that the spec states that one has a 3.125" span which should not fit the R1T as someone measured the necessary span at 3.41".
Oh wait, I see, the butt end of the pin is recessed into the outer receiver hole in your 2nd picture. The one with the factor55 logo on the butt end of the pin. Is that the design of this pin? Is it supposed to recess into the hitch receiver hole like that? Is that safe? That's likely why it works for you, otherwise the span is too narrow for the R1T if that end of the pin is supposed to be outside of the receiver wall.
