Originally Posted by RicoD
do they really improve the cut-off?

didnt know that, i thought the cut off usually had something to do with the headlight itself.
most often the optics in the housing are the reason for a more definite cutoff, but I noticed a difference when I turned them on the first time. whether its better glass clarity, or something else, I dont know, but that was the first thing I noticed. I realized my headlights aren't aimed correctly.