ok so as of now i have a 2006 arrow r with an airsal 70kit 66 main jet carb upgrade kit and uni pod. I just ordered a dmp adjustable filter and the upgraded carb. the upgraded carb is the stock carb bored out to 17.5 mm. So now i was wonering what else i could do to increase speed on top is there any smaller rear sprockets for a 2006 tomos arrow. the sprocket is different than the other tomos one beacause it has a smaller hole with spline.