S3 Air and idle screw adjuster kit for Keihin carburetors.
Easily adjust your idle and air mixture, without using tools. Anodized billet adjustment knob; CNC precision machined to ensure consistent results and a reliable setting.
This fits: 28 - 36 - 38 - 39 - 41mm. Keihin PWK, PWM and PJ carburetors.
Complete as pictured (carburetor not included).