Valve Springs (Inner, pair); GY6 plugs the Blue Line version features

the Blue Line version features an integrated internal brace that prevents the clutch body from warping under high rotational load — protecting the arm posts and ensuring reliable engagement over the long term

Detailed Model Fitment

Faster Acceleration: Superior combustion efficiency translates to improved throttle response and top-end speed

you may need a small spacing washer or minor trimming of the non-structural plastic tab to clear the wider spring OD

and base gasket

Valve Springs (Inner, pair); GY6 plugs the Blue Line version featuresInner springs for exhaust or intake valves on GY6 125 150cc engines Product is intended as OEM equivalent for listed models. Any misuse, alteration or alternative application is prohibited by law.