Rubber hoses, what are they for?

Not shown on that diagram is the small hose that provides Vacuum to close the normally open Vacuum Switch Valve on high engine braking.

Great, thank you!

So I need to find a vacuum switch valve t-piece and some hoses to fit plus create connection to the new to be created airbox.

Piece of cake!

(Right....!)

The U.K. bike didn’t have the clean air system fitted. You can blank off the reed valves on the cam cover and the air box.

Thanks!
However, it seems a good system to have, cleaner and better performance?

McBoney,

Just get rid of it altogether, you really dont need it.

It was only ever fitted to US and Canadian KZ models for their countries emission standards and has absolutely no effect or benefit to the performance. It just "farts" unsued exhaust gasses back into your airbox...............nothing else.
As Mizz states, just block off the 2 small cam cover plates and plug the hole in your airbox. It saves you weight and is less to go wrong and less unecessary pipework and mess under the tank.
If it WAS important or worthwhile, they would have fitted it to the Z1300 Euro models too...............which they did not and they have exactly the same power and perfomance.

Its the same with ZRX1200 models too, and all owners in the UK ditch it as soon as they buy a bike............just look at the UK owners forum.

Pete F
UK

mizztheman wrote: The U.K. bike didn’t have the clean air system fitted. You can blank off the reed valves on the cam cover and the air box.

Canadian KZ1300s- at least the earlier ones, didn't have the system fitted either.