Ok, sprockets, once and for all...

[ROCKET_80]

What's the ideal size? 50? 44? any other size.....?
I want to also know if changing the sprocket will damage motor(i.e. from higher revs)
And also can exhaust be changed, or will that change backpressure and have an effect on the engine?
thanks all

 

[gone_fishin]

fairly decent discussion here, rocket: Bigger sprockets?

anyone know where any muffler and expansion chamber stuff is? lemme know and srdavo will tag it.