Universal Parts 150cc GY6 Complete Cylinder Head - Non Emission $59.99 Quantity discounts available QuantityPrice SKU: 164-301 This item is IN STOCKCurrent Stock: 14 Quantity -+ Add to Cart Details Specs Overall Height: 60mmBore Diameter: 57mmIntake Port Diameter: 24mmExhaust Port Diameter: 24mmUses M6x1.00 Exhaust Studs Supported Models GY6 QMI/QMJ 152/157 DetailsSpecsSupported Models Back Universal Parts Complete Non Emissions 57mm Cylinder Head for 150cc GY6 4-stroke QMJ157 engines. Back Overall Height: 60mmBore Diameter: 57mmIntake Port Diameter: 24mmExhaust Port Diameter: 24mmUses M6x1.00 Exhaust Studs Back GY6 QMI/QMJ 152/157