Wiseco Piston Kit .40 or .20 On Rappy 350

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a good price would be about 50 no higher and there can be some lower but for the place to get it done just ask around at like auto parts stores.
i go to my local suzuki shop and they charge $30. did a good job on my dirtbike so im not worried about there quality.
try your local bike shop.
i have a .40 wiseco...its been great...not even fully broken in yet.
go .20 over on it, going .40 over is a waste, its only gonna give you about .0045345 of 1 horsepower. If you go .20 over there will also be more room if you rebuild it again.