I need some suggestions guys. I have a 02' 640 and need an exhaust system. I spent the dough on a full Big Gun system and had it on my bike for two years. It fit horribly when it was new, never sealed right, rattled, and rested against my cylinder head and melted a hugh divot in it. I was in Mexico on a 1200 mi trip to Copper Canyon, when the headers moved forward and burned a hole in the radiator. Needless to say, I removed the system and sent it to the dump after the sledge hammer was done with it. Very few mfg's make anything for this bike, esp exhaust. Any suggestions welcome. Thanks in advance.