If you got more torque by reducing the front sprocket size you would get better acceleration but less top speed. The pulse adrenaline should be able to handle a 17t because it has smaller wheels, my Sinnis Max has a larger front sprocket and larger wheels than the Pulse Adrenaline and it handles the ratios just fine (good top speed and good acceleration. Your engine probably won't have enough torque to get the full 13% speed increase but with a couple other mods such as a free flowing air filter and a larger main jet you should be fine. Also a larger front sprocket will give better fuel economy.