This Mikuni Carburetor air-box adapter for TMX-18 and TMX-27 carbs with a slightly smaller 62mm spigot diameter than our TM carbs. It is designed for use on motorcycles requiring a 12mm extension when wanting to use the standard OEM air-box. This adapter may require shortening for some applications where correct length sleeves are not available. The adapter is made from silver anodized aluminum with a 2mm wall thickness for strength and rigidity. This air filter, air cleaner, air box adapter sleeve has been designed and manufactured for a good interference fit over the Mikuni carburetor spigot.
The sleeve has a 62mm ID at the carburetor spigot with a 12mm extension at 60mm OD.
This sleeve also suits a range of other carbs with a 62mm inlet diameter but we do only guarantee the interference fit to be correct for our TMX carbs found on this site, VM36-4 and VM38-9 roundslide Mikuni’s. Our TM38 non pump flatslide’s require another version of this sleeve (also available) with a fractionally larger ID for a more compatible interference fit.
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 high strength two pack epoxy. 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.