2007 Nightster - 2700 miles - changed the shocks to Progressive 412's and changed the fork springs as well (again Progressive) HUGE change - There is little to no damping on the stock shocks that were on my bike - this causes neck problems, back problems, back side problems and, if the bump is large enough, knocks the wind out of you. I'm 52 and no amount of miles will break in the seat on this bike. I have another bike for long distance, but I wanted to be able to ride tank to tank without a break every 25-30 miles.
If you value your kidneys, spine or other body parts...change the shocks - you will not regret it!