27.8 mm diameter intake valve and 23 mm exhaust valve set for 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 go-kart & scooter engines. These valves are used on a wide variety of go-kart & scooter models that have Chinese built 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 engines.

Please check the dimensions on the item specifications below to see if this is the correct intake valve for your Chinese built 125cc GY6 QMI152/157 and 150cc GY6 QMJ152/157 engine.

Intake Valve Specifications
Valve Head Diameter: 27.8 mm
Overall Length: 65.6 mm
Stem Diameter: 4.95 mm

Exhaust Valve Specifications Valve Head Diameter: 23.0 mm
Overall Length: 65.3 mm
Stem Diameter: 4.95 mm