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Continue to ChatCylinder Head Assembly - GY6, 125cc to 150cc, Air Cooled - 20A8897 - PBC1798F1 - https://www.powersporta.com/express-parts-catalog/engines-parts-upgrades/cylinder-head-assembly-gy6-125cc-to-150cc-air-cooled-20a8897-pbc1798f1