Description
GY6 58.5mm Cylinder Head for 125cc and 150cc Engines
The GY6 58.5mm Cylinder Head is designed specifically for 125cc and 150cc GY6 4-stroke engines and compatible vehicles utilizing 160-180cc cylinder kits. This cylinder head features a deeper combustion chamber, which aids in improving combustion efficiency. It is one of the GY6 scooter parts that can significantly boost engine performance during your next repair or upgrade. This part is important for maintaining reliable engine function in your scooter.
Construction and Design
This cylinder head incorporates a unique design to improve combustion efficiency. The exhaust valve diameter measures 23mm, while the intake valve diameter is 27.75mm. The exhaust port and intake port diameters are 26.5mm and 27.5mm, respectively, ensuring a proper fit and function within the engine assembly.
Installation Considerations
When installing this cylinder head, note that the threaded holes for the exhaust are shallow, measuring only 10mm. You may need to trim the exhaust studs or utilize bolts to achieve a proper seal during installation. Proper attention to these details will help ensure the efficiency and reliability of the engine after installation.
Specifications
- Exhaust Valve Diameter: 23mm
- Intake Valve Diameter: 27.75mm
- Exhaust Port Diameter: 26.5mm
- Intake Port Diameter: 27.5mm
- Depth of Exhaust Flange Holes: 10mm
Fitment
This cylinder head fits a range of vehicles equipped with GY6 4-stroke engines, particularly those with 125cc and 150cc configurations, as well as certain 160-180cc kits.
- GY6 QMI/QMJ 152
- GY6 QMI/QMJ 157
- Various makes/models
Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.
Shop more: GY6 Scooter Parts · Chinese Scooter Parts · Scooter Cylinder Heads & Valves · Scooter Parts
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