QMB139 69mm Valve Springs and Clips Rebuild Kit for GY6 50CC - Parts Categories

This QMB139 69mm valve springs and clips rebuild kit is expertly crafted for GY6 50cc engines, providing essential components for restoring optimal valve function and engine performance.

• Intake Valve Overall Length: Precisely 69mm, ensuring a perfect fit within the cylinder head assembly.
• Intake Valve Diameter: Measuring 18.5mm, designed for efficient airflow and proper sealing.
• Valve Shaft Diameter: A consistent 5mm shaft on the intake valve ensures stability and durability.
• Exhaust Valve Overall Length: Also 69mm, matching the intake for balanced valve train geometry.
• Exhaust Valve Diameter: 16mm, engineered for effective exhaust gas expulsion.

Compared to generic kits or worn-out original parts, this rebuild kit offers precise dimensions crucial for the QMB139 50cc engine's reliability. It replaces worn components, ensuring your engine achieves its intended power output and fuel efficiency, making it an ideal upgrade for maintenance or performance tuning on 39mm bore GY6 50cc engines.

Key Technical Advantages: Technology and Performance

This kit delivers superior performance through its precisely engineered components, including high-quality valve springs and keepers designed to withstand the demands of your GY6 50cc engine. The exact measurements for intake and exhaust valves, along with their respective diameters and shaft sizes, guarantee seamless integration and optimal valve operation. By investing in this rebuild kit, you ensure your engine benefits from consistent compression, improved throttle response, and enhanced longevity, keeping your ride running smoothly.