Personally I don't think it's a good investment for the lighter weight FJR. The fork brace may do some good if you have a big heavy pig of a bike with a wide fork set, larger cruiser types are more susceptible to having the forks flex or twist getting in the corners. As the FJR goes and as someone else brought forward earlier, unless you are using your bike to race, riding on the edge or getting into the corners and really pushing the bike for all it's worth, you may just be getting an expensive good looking piece of aircraft aluminum.
As this is just my own opinion, I have in the past used these and swore I was getting a more solid feel from the bike I was riding at the time. I rode with the brace on for about a week, after which I removed it. I again rode with the brace off to see if the front of the bike was slow to respond in the twisties or felt twitchy in any way, the answer was no! I really believe the added stability brought on by using the fork brace was all in my head.
If you feel adding this brace actually helped your bike in the handeling department, please don't think I'm saying what you're feeling is a figment of your imagination. I'm sure you have a better feel for what your bike is doing than I. All I'm saying is for me personally, It's not worth it to me installing this on my FJR. To be completely honest, I did use the Superbrace product but not on the FJR. I used the brace on a 99 Sportster ( wanna buy it? was used for a week).
Ride Safe, C1