Kinesis Owners

Kinesis 4S Disc has an "integrated FSA type headset"

Anyone know which model it is, specifically, and if there's something else, preferably better, I can replace it with?

Oh hai!

You need to get your S.H.I.S straight! More info here.

Merlin expand on Kinesis' description: "Tapered headtube – 1” 1/8 top race, tapered to 1” ½ bottom 36x45 integrated FSA type."

I know, "ain't nobody got time for that" so I've done the heavy lifting for you: IS41/IS52 40 (45°).

Cane Creek 40 series is the Tstr fan-boi headset of choice: best function/price balance. (fifth row down, second or third column from the right).

You're le welcome!

PS Usual caveats apply. [I have no idea what I'm doing meme]