Get a New Hitch Pin!!

Yes, as mentioned the pins and locks are fully interchangeable. I have the same key for all the locks - hitch pin and wheel locks.

Have you measured through the hole? I stopped by a dealer on the weekend and measured about 3 3/4 through the hole, suggesting the 3.9" (Wheel Lock QR/HD pin) should work. I'd neglected to bring one of my wheel locks to verify, will try to do that on Thursday. Even though it'll be a while before I buy a 4th gen, I need to order some other stuff from 1UP and may as well get the appropriate pin now to save shipping.

 

3.9" may work, but it would be tight. I rather get a slightly longer pin than one that is too short.

Also, your previous post does not mention that the pins and locks are interchangeable

 

Certainly, if ordering and you don't already have any wheel locks to try out, better to be cautious.

I was acknowledging @stan23's post mentioning the interchangeability.

I hadn't previously mentioned it as I thought it was common knowledge. I've always had wheel locks for my 1UP racks.

 

yeah, I don't use wheel locks. My bike goes from the house to the trailhead and back home.