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Message: [QUOTE="DreamZx93, post: 884612, member: 56805"] Just bought another bike from a guy to use for a practice bike. Its a 01 RM125 with Bills Pipe cylinder, wiseco piston and the head is shaved down 60thou/in. I havent road this thing when it was fresh so i dont know how it should run. Im wondering what the compression should be so i can check it and see if she needs a new top end. Also is there any other way to tell if I need a new top end. Also I have a micrometer can i just pull the head off and measure the bore and all of the jug and piston if so what should they be. As far as i know its all stock bore. Thanks for the help... [/QUOTE]