I'd advertise it everywhere you can think of. Wherever you end up selling it, here's some advice you probably already know.
Scams. Let's say you sell it for $9,000. If someone says they have some kind of check that's written for $11,000. he'll send you the check, you send him the title and you send him the extra $2000. Then, in two weeks your bank says the check was a fraud, and you're out your bike and two grand.
Another is someone sends you a cashiers check for your asking price. Two weeks later you find out the check is bad.
People can make very realistic cashier checks. If you accept it, tell him you'll give him the bike and title only after the check clears your bank.
Here's another. A guy has $9,000. in $100 dollar bills that reek of some fine O.G. Kush. Get one of those pens that prove money isn't counterfeit.
And always ask for some sort of payment in hand, and if required, a valid class M endorsement, (Calif).