Mid East 2024 Pines on 9 45 B Lap1 23 Beta 390 RE Theme comes with nice flat design concept and responsive layout. 5.0 Throttle valve for Keihin PWK carburetors. The item 5.0 throttle valve Keihin PWK 36 38 39 41 2-stroke carburetor slide carb 50 NEW is in sale since Friday, September 1, 2017.