I can't speak for the other three but Kawi's are not limited to 299. The speedo simply won't read any higher than 299.
The tach will redline in 6th at 299 but if the bike has enough power the rpms will continue to climb. My 04 was geared but I never had a speedohealer, I could hit the limiter in 6th and the speedo would read 299 @ redline, and would also read 299 @ the limiter.
The 299 readout is probably 5-10% optimistic in the first place though. 300+/- seems to be about the most you'll wring out of a 1k anyway. Lots of stock sports cars will spank that... granted it might take em a few minutes to catch up, first