I ride glamis and i have 300's in my banshee and it runs great. The motor is stock. I have another banshee and FMF gave my 260 jets and i burned up the motor last week. The place i get my bike worked on told me i should have at least 300's in there, 260's are too lean. I now have to rebuild the motor. The bike has a cool head, pipes, intake, boost bottle, jetting, the normal stuff.