Does a K5 rad fit on a K4?
 

Wihtout changing the fan & hoses. I suspect the mounting brackets to be slightly different but is that it?

I found one that is 100 bucks cheaper than the original K4. And since I have to change mine anyway...

Er, if you have a K5, isnt the radiator under waranty, unless you have dropped the bike fo course.

The rad should be the same. Its only the naked and fiared veriosn that are different

And, of course, that the radiators on the K4 and K5 are different sizes as far as I remember! I believe they made the rad narrower on the K5, so I wouldn't be at all certain that a K4 rad would fit a K5 or that a K5 rad would fit a K4.

Ah, What he says^^^^

Yes, and (at least if it's an S, rather than naked), the way the cap in the top right hand fits in relation to the fairing is different between the models("inside" the fairing on K3/K4, whereas it's "outside" on the K5), so I'd say a straight swap is a no no.

The answer I was looking for.

Thanks