Impeller pitch is always a puzzle since everyone measures it slightly differently, though Joe Heim (Kawasaki Jet Ski Research and Development Dep.) informed us that the pitch of Kawasaki Ultra 300Xs new impeller is close to 14/20. Kawasaki did not try to slow down the boat with the impeller because they use the governor to do that. Heim stated that in Europe the new boat with no governor it should go 71+mph. If someone finds an impeller that provides better top speed it would probably wont hook up so well.
