Update went with the slip on Yoshimura R3 badge. done deal. I'm cool with the deeper sound and better looking and much lighter.Well that's what I thought. I want louder and a slip on ain't going to do it. The BALL of Steel must go bye bye. A Yosh R-77 Full system with the DB killer installed is good so far as I heard. Someone's done a full Mapping and the whole bit. I ride for fun and if its a little loud and not street legal on the Yoshi site. Oh well. There's lot's of loud bike's out there, probably louder than the R3 with its 320cc how bad could it be. I think it will be great. thats what I think. There's a guy on here just installed 77 full set and now is selling it a week later on this Forum, because it's to Loud for him. He just ordered the Yosh slip on. I don't know if he tried the DB killer or not. It comes with the kit packed well I heard with foam. I heard the engine performance is suppose to be better with the DB installed.