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  1. #1

    gp1200r cylinder need help!!!!!!!!!!!!!!!!!

    can any tell me if there is a difference between a 66voo y-4 cylinder and a 66v00 y-3 cylinder i am trying to find a 66v00 y-4 cylinder

  2. #2

    Join Date
    Jun 2007
    Mooresville, NC (Lake Norman)
    You talking about the stamping in the cylinder that has those digits? You can use any 66V cylinder, they are all interchangeable. Only difference is that stamp up by the top, which denotes clearance in thou's - there are different piston kits for clearance purposes. I always run "A" pistons - just order the correct kit, Pro-X has A,B,C,D kits etc...

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