do i really need a new pipe and silencer or just the silencer or neither for a cdi with no rev limiter for just trail riding. if so would a procircuit be any better than fmf or would my best bet be to get a hetrick racing exaust system.
if its posible could u tell me wut the top speed would be with a twin air air filter, that cdi, and a pipe and silencer or just the silencer or neither. thanks