Our training Shimano 110/4(bolt pattern) oval chainrings are designed for new Shimano cranks like Dura-Ace 9000, Ultegra 6800, Shimano 5800 and others. This is shift-able chainring for 2X cranks.cnc machined 7075 Txxx Aluminum. Long-lasting construction.Compatibility….Shimano Dura-Ace 9000, Ultegra 6800, Shimano 105 5800, Tiagra 4700Please Note: Product listing is for a chain ring only, crank arms are shown for display purposes.
