20mm 49cc to 125cc carburetors most commonly used for (and not limited to) small 4-stroke dirt bikes and quads (ATVs). Also used for various other 49cc 2-stroke as well as 50cc to 125cc 4 stroke machines. This carb has a 20mm manifold opening, 30mm breather opening and 48mm center to center bolt mount.
Manifold Inner Diameter: 18.9mm
Breather Inner Diameter: 33.3mm
Breather Outer Diameter: 38.1mm
Bolt Mount (centre to centre): 48mm