There was a firm San Jose who made fork struts for pushrod BMWs way back when. Improved the handling of my RS a treat and also showed the industry how easy it is to make a fender strut-***-brace that works. Recent Harleys with 49mm forks are probably much better off than other models, as their fork tubes should be much stiffer than the spindly things of yore, but I do find it disappointing that strong stiff mudguard stays are not routine.

 

I have a Screaming Eagle for brace powder coated black sitting on a shelf in my garage. Haven't got around to installing it yet. I also have a set of Ricor shocks on the way. Still need the TT but the next thing I need to decide on is the front suspension help.

Will be interesting for me to see if I can tell a difference with the brace after reading this discussion. I mainly bought it because I knew they helped a ton on my old Z1/KZ bikes. Those have notoriously bad front ends though.