I drag race other riders, but i dont want to really sacrifice a lot of overall speed because of the amount of road riding i do where my speed is 60+ most of the time. im considering a 13t sprocket because the more race oriented quads beat me, and i dont have the money right now to upgrade much. how much will the top speed drop with just a stock xx with a 13T? (ive ridden for 8 years, but im new to this kind of stuff)