Description
180cc big bore kit for GY6 based engines over 125/150cc. The bore measures 63 mm. Kit is suitable for all air-cooled 4 stroke 125-150cc Kymco engines (scooters), and most Chinese imported vehicles 125/150cc (scooters, quads and buggies) This cylinder can be used with the original cylinder head. And if that wasn’t enough, a modified camshaft with adjustable timing is also available. Supplied as shown. Please check dimensions at the base of the cylinder on the crank cases before ordering, to ensure there is appropriate space for this big bore cylinder. External cylinder bush: 65mm. Please note: If purchasing this kit for the Sym 125cc scooters, please ensure your engine is the GY6 version (cylinder head stud holes have a distance of 63mm hole to hole, outside to outside measurement). Attention! : Boring will be required for some GY6 cases
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