Not that I'm aware of. A zick kit is a zero kick upgrade, although they tend to already supply it In newer ego's. Yours might already have one, its basically a new rammer system that reduces the ego's kick. Remove your rammer and have a look, I think they brand the zick rammer.
The first Zick kit was introduced to the SL74 models, and was to create less kick when the rammer returns back after a shot has been fired. These were available as an upgrade kit for the ego 07.
The Zick 2 kit was introduced when the SL94 came out if memory serves me right, reducing kick further than previous models having a rubber dome cushion inside the rammer cap. These are available as an upgrade kit for ego 07-09.