300ex bore kit

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Sep 5, 2005 | 07:53 PM

dirtrider138

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Trailblazer

Joined: Aug 2003

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300ex bore kit

what is the compression ratio for a .040 piston and .020 ? also wats the cc increase.

Sep 5, 2005 | 10:05 PM

WISTECH

Pro Rider

Joined: May 2003

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300ex bore kit

Compression ratio does not change with bore size . It is built in to the specs you ask for when you purchase a piston. Displacement with minor boring is very small also. Maybe a few cc's.

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