Upgrade your Trkimal's Big Bore cylinder to breathe new life into your 50mm GY6 50cc scooter. We offer a comprehensive rebuild kit specifically designed for the 139QMB model, ensuring compatibility with existing valve systems.
Our kit includes all necessary components, including new piston rings, cylinder head gasket, and piston pin seals. The process is straightforward, allowing you to restore your vehicle's performance while minimizing downtime. Our rebuild procedure is carefully crafted to preserve the original engine characteristics, guaranteeing a smooth ride and optimal power output.
By upgrading to our Big Bore kit, you can expect significant gains in power and torque, making it an ideal upgrade for enthusiasts seeking improved performance. The 64mm valve system ensures better airflow and combustion efficiency, leading to increased acceleration and responsiveness.
Whether you're a seasoned scooter builder or a newcomer to the world of big bore upgrades, our Trkimal Upgrade kit is an excellent choice. With its reliable construction and straightforward installation process, you can focus on fine-tuning your vehicle's performance rather than wrestling with complex procedures.
