GY6 180cc 61mm Bore EGR cylinder head with valve

GY6 180cc 61mm Bore EGR Cylinder Head Assembly

Upgrade your GY6 engine with this fully assembled EGR-style cylinder head, engineered for 180cc performance with a 61mm bore. It's designed to deliver enhanced airflow and reliable operation for 4-stroke engines.

• EGR Style: Features an integrated Emission Control System for regulatory compliance and cleaner combustion.
• 61mm Bore: Provides a larger displacement potential, ideal for boosting the 180cc GY6 engine's power output.
• Intake Port Diameter: 24mm opening allows for substantial air-fuel mixture intake.
• Exhaust Port Diameter: 24mm port efficiently expels spent gases, supporting higher RPMs.
• Intake Valve: 27.75mm diameter valve ensures robust airflow into the combustion chamber.
• Exhaust Valve: 23mm diameter valve optimized for effective exhaust gas evacuation.

Compared to standard GY6 150cc heads, this 180cc version offers a significant increase in potential power and torque due to its larger bore and optimized port sizes. The EGR system integrates smoothly, maintaining emissions standards while the valve specifications — with a 5mm shaft diameter for both intake and exhaust valves — ensure durability and consistent performance under demanding conditions.

Key Technical Advantages: Technology and Performance

This cylinder head assembly leverages advanced design for superior thermal management and gas flow. The 61mm bore, combined with precise 24mm intake and exhaust port diameters, maximizes the engine's volumetric efficiency. The inclusion of the pulsed secondary air injection system (PAIR) as its Emission Control System reflects a commitment to both performance and environmental responsibility, setting it apart from engines without such advanced emissions technology.