WeBike Japan. Period. "MAYBE" MSXsport(?) It is truly beautiful, in a Carbon Fiber sort of way. The fit is perfect on the bike, as the stock pan was obviously used as the indents from the seat strap are still visible. They pretty much bought a stock seat and got busy with it. Very nice job with the foam as well as the cover material and stitching. More comfy. Keeps your butt forward, GREAT for center of gravity on the bike. But...if you are a big dude it may be too far forward. I would say anything over 30" inseam.
i got one with white stiching from webike and i do really like it. the very bottom is a little hard but overall WAYYYY better than stock. a local place wanted to charge me $600 for a custom seat and I paid $165 from japan.
Ive done about 150km on my seat like that and my comments would be that it is an improvement on the OEM seat but not amazingly so... the cushion is quite hard but the better position and broader seat area make it more comfortable... you will feel the bumps in the road though... when I 2up with my gf she says it is more comfortable than the stock one... the pillion pad has noticably more foam than stock... Im considering taking mine to an upholster to have foam added because its still not the level of comfort I would like. if the stock seat is a 4 out of 10 I would put this at a 6 out of 10 comfortwise.... looks are much better tho IMHO and it seems to be easier to take off and put back on (I never did the washer mod, and this seat doesnt feel like it needs it)