I already add High performance air filter and pipe. I also have Dial-a-jet, but my bike cuts out before other bikes. What can I do to take my top end speed futher??  

a different number of sprockets. sorry i cant be specific i just read in a magazine that diferent numbers of sprockets can make it were u either have like more torque and shift more or a little less torque but higher top speed  

If you are cutting out on taking off from a start or as yourgoing u have to much top end.Sound like u need some bottom end change your rear sprocket go up with the number of teeth on your sprocket intell you are please with it.I have a 426f i put 50 tooth on mine and i love it.Its got good bottom,middle and top end power in all gears.