Before my ride from Florida to Indiana (4th of July week), I had GMD Computrack
in Jasper, GA (Kent and Tracey are the best to deal with) install a Race Tech front end (springs, emulators, and gold valves) on my Road Glide.
Immediately after the install, we took a minor detour and hit the Tail of the Dragon. All I can say is that the performance difference is impressive. Transitions from right to left (and back) in the turns are quick and precise. It eliminates the bob that is present with the stock suspension.
Kent at GMD set me up a little on the stiffer side, and that gave me a little more lean angle out of the bike. I wasn't leaving as much chrome behind me on the tight corners, which is definitely a plus.
In addition, when you dump the bike into a corner, it sticks. The front end doesn't move like the stock front end used to, its solid.
There's a noticeable improvement with absorbing bumps as well - its a smooth transition in and out, rather than a hard hit and smooth release (at least that's what I experienced with the stock setup). This is especially nice for highway riding. As we went further north, and pot holes/breaks in the pavement became increasing present, the Road Glide hit any variation in the pavement as smooth as silk (at least on the front end).
I have Progressive Shocks in the rear, but I think I'll be changing them out to Race Tech as soon as the wallet will allow.
+1 for Race Tech Front Fork Springs and Emulators - a must for anyone hitting the mountain roads, or wanting a smoother ride on the highway. They certainly get my endorsement.