Express ON, Warehouse "Express" items are automated and typically shipped out next available business day and delivered within 4 day. In Stock
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44mm 'big bore' cylinder & piston kit for 44-6 2-stroke engines.
44mm big-bore kit for '47cc' chinese import pocketbikes with case reed inducted engine. For example, stock bore on the '47cc' engine is 40mm - meaning with the stock 32mm stroke, the engine size is actually approximately 40.2cc. This kit will increase your displacement to a much more powerful 48.7cc.