Is any drilling required to dyno jet a ninja 250r 2008?
I am new to motorcycles and I want a little more horsepower out of my 2008 Kawasaki Ninja 250R. I would like to know how much engine/exhaust modification would be required to put a stage 2 dynojet kit on the above bike. The only other modification on the bike is a twobros slip on muffler.