- 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
- 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
- Designed in UK, manufactured in Poland
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