Harley-Davidson has used the 40mm Keihin constant velocity (CV) carburetor since 1988 on Sportsters and introduced them in 1990 on the Big Twins. The 1988 model differed from the 1989-and-later carbs ...
It's an interesting fun fact that once electronic fuel injection appeared on the scene, carburetors enjoyed significant improvements in technology. Perhaps this is mere coincidence, but the basic ...