I made a quick look at some of my suppliers and found a 172.5 track crank set (FSA w/144 BCD). Finding a 180 or even a 175 track/single chainring crank will not be easy. The Sugino RD2 comes in a 175mm (130BCD) for $70-$100 (for arms only or approx. $150 for complete set). Origin8 P/P Track crank 175mm (130 BCD)for about $75 is available as well.
Last edited by TLCFORBIKES; 03-31-10 at 08:54 AM.