im sorry that im creating a new same repeated thread,
i searched a lot in forum but couldn't get the answer.
i have a pulsar 180 classic ,
CAM ROKER PISTON VALVE are in bad condition, have to change them
1. p200/220 cam roker valve can be installed on 180 classic
2. Only Polishing the Exhaust Port will enhance the power or not
and also want to know, Boring the existing cylinder or New Cylinder Kit, which one is a better



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