Higher engine power output requires both a larger manifold and racing air filter. A bigger carburetor matched to this polished alloy big intake manifold means more rpm, which in turn means more power and higher top speed potential.
Many manufacturers fit small intakes to restrict power, this big manifold is your ticket to allowing better fuel/air flow and higher cylinder filling capacity. 32mm-36mm rubber carb clamp, 45mm bolt spacing for engine mount. 28mm internal diameter for big carbs on many Chinese and Taiwanese 4 stroke scooter engines (QMB139 / 139QMB).
This will take CVK type and PWK type carbs!
Old part number was KNK200.03