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This yearly Mini Drag Racing-sponsored 14.5ci or 237.6cc dyno contest for kart and mini bike builders follows WKA Open style rules used at the Big O, Thanksgiving Thunder, Wayne Overton, and Batesville Indoor. Crankcase may be billet or cast with a billet side cover allowed, heads may be billet or cast with no modification limits, fuel is carburetor-only pure methanol with no additives or injection and fuel provided, ignition is factory-style analog or PVL digital with no CDI or programmable timing, and exhaust has no restrictions.

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