I donĀ“t know exactly how much horse power she has, but if you want to add about 4 or 5 or maybe 6 more hp slap a white bros. R4 with the high boy head pipe.This will run you around 380 bonze.My bud has the same bike without the pipe and I pull on him in every gear like he is standing still.CALL WHITE BROS. AND ASK FOR GARY JONES,HE IS THE DUDE WHO DESIGNED IT AND LOVES TO HELP OUT.