[sabu]

Who makes a good quality fork mount that I can use to attach to my truck bed?

[Tarukai]

Looks like the two expected make some, Yakima and Thule.

I noticed this one from Thule: Thule 822 Bed Rider - Thule Truck Bed Bike Racks

It looks pretty good, since it's adaptable and doesn't make a difference bedliner or not.

Searching google with Truck bed bike rack returns a good amount of results.

[Grape Ape]

Check you LBS, I was in mine and they have some similar to this Thule add a block They had 2 different types both use a quick release skewer one has a set up for a lock so that when it is closed you can put a padlock through it to keep it from being undone. I don't know the brand but if I get a chance in the next couple of days I will get it.

I am going to get me some and bolt them to my across the bed toolbox.