Tuning carburetor Mikuni VM20 with 20mm passage. 2-screw model, the main jet can be replaced externally without dismantling, suitable for Zündapp, Honda, Simson geared mopeds.
Main jet: 180
Idle jet: 25.0
Needle: 4J13
Gas slide: 2.0
Mixing tube: 239 0-6
Needle valve: 1.5
50mm stud bolt spacing
43mm air filter connection
