absoluteBLACK Premium Round 110 BCD Road Outer Chainring for Shimano Dura-Ace 9100 - 50t 110 Shimano Asymmetric BCD 4-Bolt Black. absoluteBLACK Premium Round 110 BCD Road Chainrings utilize absoluteBLACKs top-tier design features. They are designed for new and old Shimano 4-arm cranks such as Dura-Ace 9100 9000 Ultegra 8000 6800 & 105 R7000 and more. Optimized with smooth shifting in mind premium chainrings have a 6-point ramp and recess design. Chainrings are crafted from CNC machined 7075 aluminum and feature an anodized finish for exceptional durability.

Rings provide exceptional stiffness due to thicker 5mm construction

Provides excellent weight to strength ratio

10 11 and 12-speed compatible