g,day cool uncle .mivv makes a moto gp stubby muffler .i have one fitted to my 2006 fz1 with a power commander,bmc,filter and a fuel cut elimanator from ivans performance (in new york) and i have uped the horse power to 146 hp . it is extremely loud without the bung (loud enough to make harley riders snap their heads around to see what it is ) heheheheee too loud for our coppers . termignoni were in the proccess of making one though i dont know if they went ahead with it..