I had this put in at my last service, and after 500 or so miles on it, I am impressed. The Tri-Glide is my tenth Harley since my first in 1986. In all of my later than 2001 big twins, I used Redline shockproof heavy, and it was pretty good stuff, made the shifting a good bit easier and quieted a little bit of the clunking.
This stuff makes the Redline look bad. This is by far, the quietest and smoothest shifting big twin transmission I have ever ridden. I can even find neutral with very little effort.
Give it a try, you might like it....I have no idea who makes it for them.
YMMV
Lon