Mikuni VM Air ScrewMikuni geniune TM28-418 28mm carb. The item mikuni geniune tm 28mm 28 mm flat slide smoothbore carb carburetor vm28-418 is in sale since Thursday, June 22, 2017. This item can be shipped worldwide. This item is in the category eBay Motors\Parts & Accessories\Motorcycle Parts\Air Intake & Fuel Delivery\Carburetors & Parts.