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View Full Version : What are the bore sizes for a 330 kit



MagicJames
12-04-2009, 05:02 PM
Im curious what do the bore sizes start and end at for a 250R, pro x 330 big bore kit?

MagicJames
12-04-2009, 05:05 PM
Ok i just looked up and pro-x offers 3 different sizes, 76.0, 76.5, 77.0
Can you run any other pistons from different companies?