Aftermarket ABS systems?

[willowstreetguzziguy]

Are there any aftermarket ABS systems available out there for motorcycles?

[ITSec]

I've never heard of one. ABS has to be extremely carefully designed to be in line with all other components of the brake system, the bike's ECU, and the weight, balance, etc. I rather expect anyone who has thought about doing this was also scared by their liability lawyer, with good reason. Any accident might very quickly be blamed on such an add-on not functioning, over-functioning, or just plain malfunctioning.