ok well i have a 63 tooth rear sprocket and it has pleanty of torque but i street ride a lot and my bike screams on the highway on the way to the lot.. what size rear should i use i was thinking about a 55 tooth rear ? i want something i can learn to stunt with but ride on the street as well...suggestionss???????

 

It's all give and take to what you want to do more, but dropping down to a 55 is a good median