Optimized Cylinder Head Assy for GY6 4 Stroke 157QMJ Engines

The MMG Cylinder Head is designed for 150cc GY6 4-stroke QMJ157 engines, commonly found in various types of vehicles such as scooters, mopeds, ATVs, and quads. This cylinder head comes complete with pre-installed components, including valves (with valve springs and valve seals) and a spark plug (which is not yet installed).

The key specifications of this cylinder head are as follows: - Bore Diameter: 57mm - Intake Port Diameter: 24mm - Exhaust Port Diameter: 23mm

The pre-installed valves, valve springs, and valve seals ensure a seamless and efficient operation of the engine, while the spark plug (sold separately) is required for ignition. This cylinder head is a reliable and high-quality replacement part for the specified engine models, providing users with a convenient and ready-to-install solution.

Whether you're maintaining, repairing, or upgrading your scooter, moped, ATV, or quad, the MMG Cylinder Head is a suitable and compatible option that can help ensure the performance and longevity of your vehicle's engine.

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