When every mm the carb sits back from the head counts, this is the closest you’ll get with this type of universal mounting system.
When mounted on your engine the front face of your carburetor will be positioned in a standoff location of 24mm back from the cylinder head mounting surface.
This mounting flange and sleeve assembly is designed for fitting Mikuni carburetors with a 40mm spigot outside diameter to any engine with mounting stud spacings ranging from 62mm center to center measurement through to 75mm. The alloy stub flange is made using 6061 grade Aluminum with a silver anodized coating. The alloy inside hole diameter is 34mm. The outside diameter of the alloy spigot and inside diameter of both ends of the rubber boot is 40mm for matching with Mikuni VM34, TM33-8012, TM34 and RS34 carburetors. The slotted mounting holes in the 4mm thick base do suit mounting hole centers from 62 thru 75mm when using 8mm socket head screws (Allen key) or down to 60mm centers if using 6mm / 1/4″ screws.
The assembly includes a gasket and heavy duty rubber boot attachment sleeve which has a 40mm inside diameter and stainless steel hose clamps featuring rolled outer edges to protect the rubber.