On my ZR-7S that was steering head bearings a little loose.
Steelheart- '03 Speedmaster Black/Yellow
The Hayabusa Killa
16" Shorties/140 mains/Airbox drilled
Procom CDI
"There is no cure for Celibacy. But we can treat the symptoms."
I found that overfilling with oil will make them click quite loudly..level was 20mm too high when i fitted progressive springs, lowered it and presto noise gone, cheers, Tadpole