
GY6 PAIR Style Cylinder Head
57mm PAIR System Cylinder Head for 150cc GY6 4-stroke engines.
PAIR is an acronym for Pulsed Secondary Air Injection System. It is an emissions control system used to lower HC and CO emissions. It works by allowing air into the exhaust flow.
- Fits 57mm cylinder boreÂ
- Intake Port Diameter: 25mm
- Exhaust Port Diameter: 24mm
- Emission Control System: Pulsed Secondary Air Injection System (PAIR)
Original: $39.99
-65%$39.99
$14.00More Images


GY6 PAIR Style Cylinder Head
57mm PAIR System Cylinder Head for 150cc GY6 4-stroke engines.
PAIR is an acronym for Pulsed Secondary Air Injection System. It is an emissions control system used to lower HC and CO emissions. It works by allowing air into the exhaust flow.
- Fits 57mm cylinder boreÂ
- Intake Port Diameter: 25mm
- Exhaust Port Diameter: 24mm
- Emission Control System: Pulsed Secondary Air Injection System (PAIR)
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
57mm PAIR System Cylinder Head for 150cc GY6 4-stroke engines.
PAIR is an acronym for Pulsed Secondary Air Injection System. It is an emissions control system used to lower HC and CO emissions. It works by allowing air into the exhaust flow.
- Fits 57mm cylinder boreÂ
- Intake Port Diameter: 25mm
- Exhaust Port Diameter: 24mm
- Emission Control System: Pulsed Secondary Air Injection System (PAIR)




















