i heard for the 03 z400 that the welds were cheap and if jumping it hard they would break off and you would have to reenforce them. is this true? also, what power mods would it take to be able to beat a stock raptor. i was looking at the yoshimura pro series pipe, header and all, is that the best?

 

i suppose if you've got $800 for the pro series

 

thanks, do you know anything about the frame though?