anyone have a high compression piston in their Z- 400 If you do is it worth the money?I have a 400 with a yosh complete pipe running with the air box lid off with a dynojet kit installed just looking for a little more power with out buying a new bike mine is paid for. Ilove the bike but when you get in a good tree shot somestimes I have to have my buddy ride it out he is lighter than I am.Also i have geared down to a 13 tooth front sprocket and a 42 rear helps with 2nd gear starts.any input woulb be nice

You might want to go to z400central.com they will have all the answers over there, they are a good group, thats where i go for my z needs