I just migrated over to an 06 LT from my 03 Fat Boy, and took my cupholder with me. As the title of this thread indicates, it is the best, if not bestest, cupholder ever. I really cannot sing its praises enough. I purchased mine at Bass Pro (outdoors adventure chain) for $13.99. It's called the Liquid Caddy, and a link is http://www.basspro.com/servlet/catal...=SearchResults
I believe you can get it elsewhere if there is no Bass Pro by you, but it is always nice to eyeball something before you buy. And you get to ride there, too.
Why it is so nice:
1) Four different mounting options
2) Cupholder itself is detachable from the mount
3) Cupholder is adjustable both in depth and inside diameter (it uses elastic straps)
4) Cheap. As in <$15 out the door cheap. So get two.
5) Five different colors
6) Gimbaled in every direction. No more third degree burns in the twisties.
Again, it comes with 4 different mounting options. On my HD I used the 1" clamp mount right on the handlebar. As there are no exposed bars on the BMW, I had to think about it for awhile. I came up with using the velcro mount and the velcro extension and used a pair of forceps to feed it around the handlebar tupperware in front of the front brake master cylinder.
These attached photos should help. The fourth photo is the cat eyeing my handiwork of attaching armrests to the bike. She doesn't look too impressed.
This is such a well-thought out solution that I always tell people about it. So go forth and do likewise.
If anyone has any questions about it, please respond and I'll help. Sure beats $125.
If you're looking for it in the store, it's in the boating section.