As we all know that the WR's are, well... "big boned". So I'm on a mission to put mine on a diet (I'm already on one:ride: ). I know that an after market exhaust will make a big difference in weight, along with an ebatt but how about other bike parts? Are the milled after market wheel hubs lighter than the stock ones? Are aluminum skid plates heavier than the carbon fiber ones? I've read that Yamaha put a Bridgestone tire, instead of Dunlop , on the 08 YZ250F (I think it was the YZF and not the two-stroke) because they weighed less. Is this true for the 18" tires as well? Yeah I know, buy the tires that work for you but just the same. Are there other lighter, decent, tires around? Any other areas that a little weight can be saved without giving up my beloved e-start or light? Oh and for you "smart" guys I didn't want a YZ just a lighter WR. Thanks!