Available in stock 8.5:1 flat-top or 10:1 high dome compression. The domes in the high compression models are offset to work in stock EV combustion chambers without modification. Fits all 1984-1999 EV Big Twin engines.

Not legal for sale or use in California on any pollution controlled motor vehicle.
Not legal for sale or use on any EPA pollution controlled motor vehicle.

Weight 1 lbs

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