I fitted a Mivv Suono to my 2008 FZ1. Looks good, shortish but quite loud even with the DB killer fitted. The noise is ok over 50 but annoyingly loud in town imho, ear plugs are a must. Crackles a bit on the overrun too, so if that's what floats yer boat try a Mivv. It went straight on with no problems. You will have to remove the exup cables of course but that's not a difficult job.