Genuine Keihin Carburetor Fuel Air/Mixture Adjuster.
Genuine replacement slotted air mixture screw with new spring and o-ring included.
Fits Beta/Sherco/GasGas/Scorpa/TRS models with Keihin PWK28 carbs fitted.
Keihin Part No.: W1446-231-9900 / W1711-416-9900