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Mikuni Main Jet #310 B3100


  • Especially true to size, as Mikuni jets are drilled and not stamped - each jet is reviewed on the correct flow rate 
  • Main jet, type B, hexagon head, A/F6mm, thread M5.3x0.9mm
  • Fits Mikuni serial carburetor with circular slide (VM type; SR500 ages up to `89 and all XT500)