the item was broken , not answer ao massage's .... very sad !
Mounting without installation instruction was a trial-and-error challenge (on a 2015 MT-09 Tracer) but got it done. Reused existing black bolts instead of supplied chromium ones (for the visible locations). Not sure why brackets were needed if holes could have been made on original locations / product made to fit. Locknuts should help to keep the product stick on the boke despite riding vibrations - have yet to experience a long run. Overall quite satisfied