For Reducing the carb air-intake outside diameter down to 50mm (2″) and extending the total length of the carb by 12mm. This Mikuni Carburetor air-box adapter for is designed for use on our VM30, VM32, VM34, TM32, and TM34. The adapter is made from silver anodized aluminum with a 2mm wall thickness for strength and rigidity.
This sleeve has a 58mm ID at the carburetor spigot with a 18mm extension at 50mm OD.
This sleeve also suits a range of other carbs with a 58mm inlet diameter but we do only guarantee the fit to be correct for our VM and TM non-pump Flatslide carbs found on this site.
This spigot must be installed by a competent person. When fitting the sleeve we recommend the use of a high strength 620 Loctite retaining compound or Loctite 660 liquid metal where a loose fit is experienced. The adhesive besides helping bond both items together will fill and seal any imperfections found on some carburetor spigots and also acts a a slight lubricant for the fitment.