101 Octane QMB139 Non Emissions Head(0)No Reviews yet $57.99 Quantity discounts available QuantityPrice SKU: 155-27 Out of Stock Available for BACKORDER Email When Available - Click Here! Get notified when your part is back in stock. First Name Last Name Email Address (required)Suscribe to marketing emails. Email Me! Quantity -+ Add to Cart Details Specs Intake Port Diameter: 18mm Exhaust Port Diameter: 18mm Valve Length: 64mm Supported Models QMB139 50cc/49cc DetailsSpecsSupported Models Back 101 Octane Completely Assembled Non Emissions Style Cylinder Head for 50cc 4-stroke QMB139 engines with 64mm valves. Back Intake Port Diameter: 18mmExhaust Port Diameter: 18mmValve Length: 64mm Back QMB139 50cc/49cc Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review