If you can't get a Yuasa, Cycle Gear's store brand (Duraboost) is fine. I had 2 of them in my Suzuki Vstrom.
Cycle Gear is supposed to stock the Yuasa for the FJR though, so i'd get that if possible.
Cycle Gear is supposed to stock the Yuasa for the FJR though, so i'd get that if possible.