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raptors 06 and newer are stock with 686cc, it is also a very common mod to the raptor 660 (01-05) by boring the cylinder from 100mm to 102mm (obviously changing the piston), just for reference, the bore and stroke on a raptor 660r modded to 686 and a newer raptor 700r have the same bore and stroke, but they are still very different engines

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17y ago

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