This plate allows installation of CV carburetors on Bendix and Keihin (butterfly) manifolds. Thus you can use them on Knuckleheads, Panheads, Shovelheads, Sportster →1987 and Evo Big Twins →1989. Precisely CNC-machined from billet aluminum, with special O-ring. The adapter plate has a press-fit on the carburetor, optionally using a cold-weld compound. No other gaskets necessary.

Unfortunately, this press-fit cannot be reversed without damage to the parts. This may seem radical, but it guarantees absolute tightness, provided it is properly installed and zero air leaks will influence the bike's performance.