The new Shimano S-PHYRE RC9 is the pinnacle of the modern road racing shoe. A super high performance race shoe. A full carbon fibre sole makes it one of the stiffest shoes on the market, and alongside the anti-twist heel cup and the 360° surround wrapping upper, the 903 S-PHYRE has a superb locked in fit. The new BOA Li2 dial allows for both tightening and loosening the dial via micro-adjust.