This Mikuni Rubber Mounting Flange is for use on carbs with a 40mm spigot outside diameter at the motor end, and a nominal 60mm distance between the two mounting bolt centres suits Laverda 750 models (8.5mm diameter stud holes elongated to suit Laverda 3 cylinder 62mm stud distance). The flange bore size at the mounting face is 36mm. A tapered Step-down 36-32mm Spacer Gasket can be made to suit 32mm or 34mm ports.

It is recommendied to support the weight of the carburetor to eliminate stress on flanges. A simple cable tie taking some of the weight of the carbs to the frame is often sufficient.