The absoluteBLACK Premium Shimano 110/5 bcd oval chainrings are designed for pre 2014 cranks like Shimano Dura-Ace FC7950, Ultegra FC6750, Shimano 105 -5750 and many more with 5 bolt fitting. Super fast shifting and amazing smoothness of pedaling. It is the most Premium oval chainring on the market with scientifically proven performance gains.
