not sure how different the guts are compared to regular elixirs (of which i have 3 sets), but these seem to have more power, were easier to bleed, and have much better lever feel than the regular elixir's. of course they're a bit lighter too.

in fact, the lever feel is incredible. zero play in pivots, and the pad contact can be adjusted closer in than on any of my previous brakes.

expensive, but highly recommended.