Well, I just installed a set of Race Tech gold valves on my bike. If you are thinking about taking apart your own shock, don't be afraid. I was a little concerned, but it was easy.
Same goes for the forks.
If you have a clean space to work, and some basic mechanical know how, and a vice, this is a do-able job. I will update with a ride report, but even if it rides like shit, for the first time in my life I understand exactly how damping is done. It was one of the coolest motorcycle projects I have ever done.
I made a few custom tools that are loanable. PM me if you are taking on this project.
It is very clear, however, from first glance, that the Race Tech valves can flow many times more oil than the factory parts. The Race Tech valves have some very beautiful machining, huge ports, and clearly considerable thought has been put into allowing the oil to get through smoothly.
Another cool thing is that though you can only log into the Digital Valving Selector one time, you have instructions on how to build all the shim stacks in the kit, and they are organized from soft to stiff.
So if you go to do your maintenance on your forks next year, and would like it a little stiffer, no problem, just make it so...
The last pic on the bottom is the factory shock valve (40 MM KYB). You can see that the ports are just holes drilled straight through with no porting. The Race Tech valve has about three times the port area, and all of the holes are ported. I would like to see the stock valve on a Penske, if someone can post it...