Originally Posted by Cynikal

yup..Bikesmith takes a bendix 2 or 3 speed internal hub and converts it to a fixed gear hub. Comes with a 18 tooth cog and a 1 to 1 gear with the second a 30% drop. here is a link if you want to DIY http://www.63xc.com/lewisc/diy2fg.htm

Really cool idea for those who live in hilly areas.