This universal alloy 54mm/25mm long tube with 2mm thick flat 61mm OD mounting flange is for mounting on an air-box or plate for making a 54mm or there abouts rubber hose connection back to a carb intake. 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 use with custom Mikuni carburetor fitment applications.
Please note the proximity of the three mounting holes to the 54mm OD of the tube. This flange was made for a very space restricted application but as is may still be of use to others, we made some extras.