Team Eckl is not doing the Supersport racing for Kawi this year, they are only doing the MotoGP.
Supersport is handled by Kawasaki Europe, their site is http://www.kawasaki-racingteam.com
I do not believe they are selling anything at this point, but emailing their PR guy would be a good start, let them know in past years the ECKL team offered the sponsor kits, and you'd like one for your bike.
Free advertising should be hard to turn down
I checked the kawasaki-eckl site and they still offer the sponsor sticker kit in the e-shop tab under "misc" and under "superbike"... can't speak to the quality of the kit, except they used to do the supersport bikes as CDN mentioned.
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