SSP-G GY6 58.5mm Complete Cylinder Head for 150cc and 125cc GY6 4-stroke engines and engine based vehicles with 160-180cc cylinder kits.

This head has a deeper chamber for more efficient combustion.

Please note: The threaded exhaust flange holes are only 10mm deep on this head. You may need to trim exhaust studs or use bolts for a proper seal.

• Exhaust Valve Diameter: 23mm
• Intake Valve Diameter: 27.75mm
• Exhaust Port Diameter: 26.5mm
• Intake Port Diameter: 27.5mm
• Please Note: The threaded exhaust flange holes are only 10mm deep on this head. You may need to trim exhaust studs or use bolts for a proper seal.