According to BikeRadar at the latest Interbike there were a few new fixies that had belt drives compared to the traditional chain.
Honestly I have never rode a bike that used a belt instead of a chain, so I can’t comment. But, here is what one person had to say.
Harley Motor bikes have several bikes that are belt driven, and they say they’d be good for over 7000miles. I think these belts are made by the same company. Orange MTB’s that have belt drives are at least. If they can survive 7000miles on a big Harley, they should be good for a year on a fixie. Time will tell.
What do you think are belt drives feasible on fixed gear bikes ?

{ 5 comments… read them below or add one }
Belts are for pants , stick with the chain. I have read a few reviews and even on SS bikes they are silent but nothing beats steel and what is the upside ?
Honestly I have no clue… I am guessing its a smoother ride and is more forgiving on your parts.
Upsides are low maintenance, no grease, no mess, no fuss. I’ve only tried SS bikes with belt drive, not fixed, but the ride is eerily quiet even when compared to fixed riding.
http://www.youtube.com/watch?v=ct4v5G33aT0
Yeah, they’re quiet. I have a Stealth from f8cycles that I call the Pigeon Killer. They don’t hear me coming on that thing. Fixie Inc has had that video up for a while, but f8 is the only company I know of that will actually build you a belt drive fixed gear.