Personally I think cat needs to make some readjustments to this thing BIG TIME!! First off it is 100 dollars cheaper than the f-7 it has 22 hp less and wiegh's the same. Im not doubting it wont be fast for a 600 but it will not beat any of today's power valved 700 and the rev 600 will beat it im pretty sure. So is the f-6 really worth the money? I dont think so.