The page exists courtesy of Mr Mark Jordan who has owned, raced, and built these engines for years, and has done more for the development of these bikes than anyone outside of the Kawasaki Factory. Maybe...

We have the std off the street bike at 50hp, Mark's blueprinted Std Bonneville '250cc Production land speed record' engine, his 06' Race bike, and his monster 08' race bike with aftermarket pipes.  All have been reliable I might add.

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