Asymmetrical 4-bolt 110BCD oval chainrings are designed for Shimano Dura-Ace 9000, Ultegra 6800, Shimano 5800 and other cranks with an asymmetric 4-bolt 110BCD
Includes mounting bolts
Oval rings help the rider to spin smoother and more efficiently
Example: 32t is equivalent to 30t at dead spot and 34t at the power zone
Narrow-wide tooth profile keeps the chain snug, allowing you to leave the chain guide behind