For VM 38mm, VM 40mm and VM 44mm
The Mikuni Jet Extender screws into your standard Mikuni carburetor and lowers your main jet 5/16″ further into your float bowl. This keeps your main jet submerged deep in the float bowl so it doesn’t suck air going over rough terrain or on long uphill climbs. Usually used with our Deep Well Float Bowl Nuts, which also increase float bowl capacity. This combination is great insurance against engine burn-down.