If you are looking for a port matched intake manifold for your big carb to big bore head . This is the ticket. Super smooth polished interior for perfect flow. This 27.5. Intake bolts up the the head perfect matching the ports on the engine. No big power robbing step down. No sharp edges. There is a reason we use this style intake… it’s the best in performance and build quality. Carburetor side bore: 33mm engine side bore: 27.5mm
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