Easy to adjust air mixture screw for the Keihin carburettors, can be adjusted using your fingers removing the need to carry a small screwdriver.

Available in a range of anodised colours to match any bike.

The air mixture screw is used to alter the fuel mixture at idle speed, in the richen the mixture and out to weaken it. We recommend staying within a range of half a turn to a full turn and a half from full in, be gentle when screwing in fully to prevent damaging to the adjuster.

Fits Keihin PWK 28 carburettors.

To replace Keihin part number W1446-231-9900