OK, here's the deal. I've got a 2001 ZR800 standard model. The shocks were just rebuilt this season and I am running the heavy rear springs (1604-164/165) set on the stiffest cam setting. I weigh about 220# and ride pretty aggressively. I'm lacking for rear travel. Yes, it's plush, and is fine for groomed trail, but I can easily bottom it on decent drops and I'm chewing through about 1/2 of the travel by just sitting on it.
I've heard that there is yet a stiffer spring available, possibly that which the LE ran as their heavy spring. Any know the sstory and have a part number or a good way to look the info up on line?