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CISON FL4-175 17.5cc Flathead Inline-4 Engine Model is a low-profile 17.5cc side-valve inline-four gasoline platform offered as a kit or assembled eng..

CISON L4-175 17.5cc OHV Inline-4 Gasoline Engine is a compact 17.5cc OHV inline-four working engine offered in kit and pre-assembled red or blue confi..