Gaskets & Gasket Sets - GY6-50 QMB139 39mm-50mm, For Scooters & Mopeds

These GY6-50 QMB139 39mm–50mm engine parts are designed for 4-stroke scooters and mopeds that use the widely popular QMB139 platform. Whether you’re rebuilding the top end or replacing worn components, these parts help restore smooth operation and dependable performance. Many models from brands like TaoTao, Jonway, Peace Sports, and Bintelli rely on this engine family. These components ensure proper sealing, compression, and durability for daily riders and commuter scooters alike.