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KX125 Cylinder Swap

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if you use all the 06 parts it would fit not sure if the jug n head are different from the 03 or if the pv parts are different. the 03 has the one off year of having the piston with the locating ring off centered from the intake port. in 04 they went back to having the ring locating pin center lined with the intake port, minor porting changes new pro circuit copy pipe and a shorter / straighter rubber carb intake manifold.

most of the other changes where to coinside with the slightly different frame cause of the linkage change they did.

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