I don't have any kinks but, I tihnk you should put odd stuff on the table soon. Way before the other person feels they are in a relationship.
To give you a comparision: When I was single I would offer up by the 2nd-3rd date that I didn't want kids and I didn't believe in God. It was a deal breaker a lot. But at least I felt good not dropping that bomb 6 months in.
I would say kinks are more important to reveal early than my two pieces of information and you could use that as a semi-benchmark. If you dating someone and say you wanted kids and they did not not how long before they gave you that information (or vice versa) is reasonable? They should know ones kinks at or before whatever time frame you put for my information.
If one did have a kink the other pseron probably isn't going to get use to it over time. The odder that kink is the more it will be a knockout fact for that relationship.
They are either ok with, into it or repulsed by it from the rip. The person with the kink isn't going eventually convince them that this idea is ok.