I was looking into buying a kick for my yfz and the yami dealership told me if I was gonna race then I might want to think again, cause I guess that with the kickstart you have to eliminate the fan. Their reason was that without the battery the fan will draw so much from the motor that it will really hurt the performance? I thought that to be wrong cause the yzf bike doesnt have a battery and their fans seem to run just fine. Kinda has me baffled but what can ya do? and if you leave the battery in there then you just shot yourself in the foot right!