Thanks to a reference in a recent seat-height thread, I just had my spare '14-'16 FX seat redone by
SDG USA. The Web site is dirt-oriented, but Jeff told me he could do seats for just about any bike, and was quite familiar with Zero. I sent him a complete seat and diagram (below), and the finished item fits perfectly. If you're going to get your seat done, I'd recommend doing it this way if at all possible, rather than just a diagram or description (custom pans can involve a lot of extra time & effort, and likely some guesswork re final fit unless the bike's on hand to refer to).
Here are LH and top views of the seat - the '13 MX seat I was using before is at the bottom (I imagine we all know what the stock FX seat looks like):
Diagram:
The seat is slightly different from the diagram but turned out to be just what I needed, and lets me stand up with almost no effort. The taller seat works well with the high bars & low pegs to give me nearly the same riding posture as my YZ, but with more room and 'stretch'. The slanted sides keep my legs away from the battery rails - now I have to squeeze my legs together to feel them. The bike also seems thinner now, even though the new seat is wider at the bottom than the MX one. The foam is nice and firm, so the added height doesn't get lost in squash-down.
As far as looks go... I knew it would look like a tall seat - IMO they always do - but the Zero layout is already so different from the dirt-bike 'norm' it doesn't stand out nearly as much as I thought it would. I really like how it follows the line of the rails and rear side covers, which was one of the reasons I used the FX pan (it's also a little longer & wider than the MX pan). Next time I'd go with no logos, though.
Ray