Oh no, biopace was so yesterday. These are much more expensive, so they work better!
They have 9 or 10 possible orientations instead of just 5, also. Woot.
1980ish Free Spirit Sunbird fixed * 1996 Mongoose IBOC Zero-G * 1997 KHS Comp * 1990-ish Scapin * Lemond Buenos Aires Triple
Old news. Sam Hill ran 'em in 2009 season at the Schladming WC and probably others. Was discussed ad nauseam last year on RideMonkey DH forum and all of us SH fanbois the world over decided we must buy them immediately. Shorted supply and 9-months-worth backorders caused drain on IMF and set off the latest Euro crisis.