This mounting flange and sleeve assembly is designed for fitting Mikuni carburetors with a 40mm spigot outside diameter to British motorcycles or any other engine with mounting stud spacings ranging from the Amal 2 inch (50.8mm) centre to centre measurement through to 58mm. The alloy stub flange is made using 6061 grade Aluminum with a silver anodized coating. The inside hole diameter is 32mm with a total height of 33mm and 40mm outside spigot diameter for matching with Mikuni VM30, VM32 and TM32 carburetors. The slotted mounting holes in the 10mm thick base do suit mounting hole centres from 51 thru 58mm when using up to 5/16″ or 8mm socket head screws (Allen key).
The assembly includes a gasket and heavy duty rubber boot attachment sleeve which has a 40mm inside diameter and retention and comes with stainless steel hose clamps featuring rolled outer edges to protect the rubber.