Universal Parts 39mm QMB139 Piston(0)No Reviews yet $11.99 Quantity discounts available QuantityPrice SKU: 151-15 Restock: Late November 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 Outer Diameter: 39mm Overall Height: 33mm Piston Pin: 13mm Compression Height: 17.25mm Circlips included Supported Models QMB139 50cc/49cc , Various unlisted makes/models DetailsSpecsSupported Models Back Universal Parts 39mm Piston for 50cc 4-stroke QMB139 engines. Back Outer Diameter: 39mmOverall Height: 33mmPiston Pin: 13mmCompression Height: 17.25mm Circlips included Back QMB139 50cc/49cc , Various unlisted makes/models Reviews 0 Back Ratings & ReviewsNo reviews availableBe the first to Write a Review