Completely Assembled EGR Style Cylinder Head with Valves for 150cc 57mm GY6 4-stroke engines.

* EGR Style Cylinder Head
* 57mm Bore

Overall Height: 60mm
Intake Port Diameter: 24mm
Exhaust Port Diameter: 24mm

*Emission Control System:Pulsed Secondary Air Injection System (PAIR)

Intake Valve
Valve Diameter: 27.75mm
Length: 66mm
Shaft Diameter: 5mm

Exhaust Valve
Diameter of Valve: 23mm
Total Length: 66mm
Shaft Diameter: 5mm