[knurbdarb]

I think this is what you are looking for. I have the same thing it's called a Roadrunner Cup. Look at the bottom of the page for the replacement cup.
http://www.jpcycles.com/productgrou...D0475D8&search=roadrunner&store=Metric&page=1

 

[knurbdarb]

Here's the same thing from Kuryakyn. Looks like the same thing to me.
http://www.kuryakyn.com/index.cfm/go/Home.ProductDetail/catID/0/scID/0/IMID/279