22.
I have been hit by a bit of luck. As most have noticed from the photos, the bike was still lacking an exhaust system. I could have just put the standard one back on but it seemed like a shame to skimp by doing that. The other options where a Yoshimura system I had found in Germany or an Akrapovic system for a GSXR 1100W which will fit the RF 900.
Both options needed large finical backing but I really wanted the Akrapovic which would mean finding just under £800 🙁
Over a year of praying to and watching the fleebay gods (along with alerts to keys words) I got lucky.
The standard oval Akrapovic exhaust was pretty broken but could be made in to a stubby if needed, however I really wanted to find a carbon hexagonal Akrapovic exhaust to put on the RF 900 so wasn't too worried. I also can't really complain seeing that I got it for £120 and the headers were spotless apart from needing a really good polish!
So that's what I did. Sent them to a small father / son company in Southampton called Tuck & Son
Really pleased how they turned out seeing that they looked quite bad when I got them.
Hope to have these fitted and some more updates soon.