seriously anyone who thinks a four stroke sounds better than a smoker is a fookin' shirt lifter, you might as well go and sit in the corner and shove your own knob up your jacksie!! and now a four stroke see, no comparison
on the racing scene the old TZ 750s sounded suoerb with a top branded expansion chamber....moving into recent times the Moto gp desmos are unbelievable on full song down a long straight and that V5 Honda RCV GIBBER GIBBER DROOOOOOL
Personally nothing can beat a two stroke triple with a 3 into 1, it does nothing for performance but the sound is like nothing else...