Buell and Sportsters do share some dimensions there, so if the bolt pattern matches the lock plate and it clears the output shaft nut, sure? For $19 it's worth a shot if you like it.
What are you going to do to the OE plastic cover? I wouldn't leave it off. On a Buell your foot is right next to that pant grabbing spinny thing. Maybe cut some holes in it and back it with lexan?