Autel Original 3-in-1 OBD2 Adapter Cable,16 Pin to 6/4/3 Pin OBD Diagnostic Cable, OBD2 to OBD1 6pin 4pin 3pin Plug Adapter for Motorcycle Honda/Guzzi/Kawasaki/Suzuki, Compatible with OBDII Scanners

You're right, they don't have an OBD2 port, but modern ones often have a diag port that can be fitted with an OBD2 adapter. I just say OBD2 out of habit - I mainly worked with regular cars for the years that I was in the automotive industry. https://www.amazon.com/Autel-Original-Diagnostic-Kawasaki-Motorcycle/dp/B0DF2M277F