Series of four-hole chainrings with High Stiffness Points (HSP), compatible with the Shimano® Ultegra FC-8100 12V crank set.
Manufactured from CNC-machined AL 7075 T6 aluminium alloy. Black finish with total anodizing surface treatment (TT).
- 40T inner (for 54T outer)
- 42T inner (for 55T/56T outer)
- 44T inner (for 58T outer)
- Also compatible with:
- Dura Ace 9270 with Miche UTG R81 or R92 chainring