I have a healtech quick shifter easy that came off of a 19 zx6r. on their website it looks like it works for 13+ if your interested
Not sure if you would be interested, as it it not technically a ment to be full exhaust, but I have a racefit growler slip on with black widow stainless steel headers that I just pulled of my 13 ZX6R as I replaced it with a full competition arrow.