Most of the stuff has to be modified. There is not alot of bolt on performace stuff(yet) for the Kaw's. This older engine has a pretty nasty cam, heads-ported-polished, carb work and an 2 piece exhaust header that I made. The new engine(not shown ..yet) is just plain stupid. Heads Polished-Ported-Decked, Special Ground Cam, HD Valve Springs, as well as some other internal work, Alum Flywheel, HD Valve Springs, Carb & Intake Work, HD Starter...Blah Blah....Jayson Mikula @ Four Seasons is your guy.....he is factory direct Kawasaki.
This is
the exhaust header I made that I am currently using.