Heads Up Performance is still running the same ARP stainless Hayabusa case bolts they installed in a half dozen Bonneville bikes in 2008!  Ask a Salt veteran what their bolts looked like after a summer on the Salt! 

Not only do these 12 point stainless steel ARP Hayabusa case bolts look fantastic they do not stretch as the OEM hardware will do under high loads and assist keeping the Hayabusa engine cases aligned.  The Hayabusa engine bolt kit replaces the one 12mm and all the 8mm and 6mm engine case bolts.  It is a direct replacement, no modifications needed.  ARP was kind enough to include a packet of their ARP Ultra Lube as well. 

Fitment- 1999-2020 Hayabusa