B and B Cycle Restoration in no way advocates modifications to motorcycles which go against safe motorcycling. B and B Cycle Restoration cautions anyone doing mechanical work on their bike that the work is solely at the person's own risk. Anyone who does not have the proper mechanical training or background should not undertake any mechanical project without proper supervision and instruction.



Big Bore kit buyers please read this note from us


If the owner is not completely familiar and experienced with the processes involved, B and B Cycle Restoration strongly recommends that the owner have the products installed by a qualified, professional motorcycle mechanic.


The Kawasaki Service Manual contains information and instructions
that are vital for replacing the cylinder, piston, head, and properly making the adjustments needed following their removal.




        

        
    A comparison view of the 250 bore, on the left, and the 351 bore

     with careful engineering used to protect the water jacket volume

        

                                                  The complete 351 big bore kit

                   


                                    Bill and JoAnn Blue, riding the first two 351's